Session Index

Quantum Electronics and Laser Technology

Quantum Electronics and Laser Technology I
Thursday, Dec. 3, 2020  13:15-14:45
Presider: Prof. Chao-Kuei Lee
Prof. Shou-Tai Lin
Room: 6AB Room 325
13:15 - 13:45 Manuscript ID.  0813
Paper No.  2020-THU-S0301-I001
Invited Speaker:
Wang-Yau Cheng

Stabilizing mode locked laser directly reference to atomic two photon transition- toward developing 104 clocks utilizing one Cs-Rb mixed cell
Tz-Wei Liu;Hsin-Hung Yu;Bo-Wei Chen;Wang-Yau Cheng

We directly lock the mode frequency of comb laser against atomic transition recommended by BIPM. Here we report a 6-cm Rb-Cs mixed cell based comb clocks and the investigations on related systematic errors, in which new technologies for removing the Doppler background and for controlling the comb frequency are presented.

13:45 - 14:00 Manuscript ID.  0071
Paper No.  2020-THU-S0301-O001
Wei-Hao Huang
Award Candidate
Comparisons between Anti-Guiding and Guiding Effects in GaN-Based Vertical-Cavity Surface-Emitting Lasers
Wei-Hao Huang;Lih-Ren Chen;Bo-Yan Chen;Tien-Chang Lu

We optimize the lateral optical confinement effect on the guiding structure of GaN-based VCSELs, eliminating diffraction loss and enhancing the laser characteristics in comparison to the anti-guiding structure of VCSEL. Throughout the study, we show the advantage of the guiding structure both theoretically and experimentally.

14:00 - 14:15 Manuscript ID.  0473
Paper No.  2020-THU-S0301-O002
Zuhaib Khan
Award Candidate
High-brightness, single-mode and single-polarized VCSEL arrays using backside electroplating process
Zuhaib Khan;Yong Hao Chang;Yen-Yu Huang;Yuan-Cheng Zhao;Jin-Wei Shi

We demonstrate a novel high-power VCSEL array with highly single-mode (SMSR>50 dB) and single-polarized output having very narrow divergence angle (1/e2: ~10o), high output power (3.1 Watt; 1% duty cycle) and can sustain single polarization state with polarization suppression ratio of (9 dB) under full range of bias currents.

14:15 - 14:30 Manuscript ID.  0468
Paper No.  2020-THU-S0301-O003
Yong Hao Chang
Award Candidate
High-brightness, high-speed, high wall-plug efficiency VCSEL arrays using inter-mesas waveguide
Yong Hao Chang;Zuhaib Khan;Yen Yu Huang;Yuan Cheng Zhao;Jin Wei Shi

We demonstrate a novel high-efficiency, high-speed and high-brightness VCSEL array using Zn-diffusion, oxide-relief aperture and additional passive optical waveguides. Furthermore, narrow divergence angle (FWHM: ~6o), high wall plug efficiency (22%), large output power (90 mW at 170mA), clear eye-opening and wide 3-dB E-O bandwidth (10 GHz) can also be achieved.

14:30 - 14:45 Manuscript ID.  0321
Paper No.  2020-THU-S0301-O004
Yi-Xin Lin
Award Candidate
Ultra-broadband thin-film lithium niobate adiabatic couplers
Yi-Xin Lin;Hung-Pin Chung;Hua-Kung Chiu;Mohammadreza Younesi;Reinhard Geiss;Frank Setzpfandt;Thomas Pertsch;Yen-Hung Chen

We report the first observation of counterintuitive adiabatic light transfer in a thin-film lithium niobate on insulator (LNOI) platform. A broad coupling bandwidth of 100 nm across telecom E, S, and C bands in an average coupling efficiency of 90% was obtained with this 400-µm-long nanometric LNOI waveguide adiabatic coupler.


Quantum Electronics and Laser Technology

Quantum Electronics and Laser Technology II
Thursday, Dec. 3, 2020  16:20-17:50
Presider: Prof. Yin-Wen Lee
Prof. Hsu-Hsin Chu
Room: 6AB Room 325
16:20 - 16:50 Manuscript ID.  0818
Paper No.  2020-THU-S0302-I001
Invited Speaker:
Shibin Jiang

Single Frequency High Peak Power Fiber Lasers for Lidar and Micromachining
Shibin Jiang

We successfully developed a series of single frequency fiber lasers with greater
than 1mJ pulse energy at wavelength of 1micron, 1.55micron, and 2micron, which represent
the highest pulse energy of such types of lasers in the world to the best of our knowledge.
Their applications for Lidar and micromachining process will be presented.

16:50 - 17:05 Manuscript ID.  0559
Paper No.  2020-THU-S0302-O001
Hao-Hsuan Hung
Award Candidate
Generation of sub-megawatt-peak-power femtosecond pulses from a single 24MHz Cr:forsterite oscillator for video-rate three-photon microscopy
Hao-Hsuan Hung;Lu-Ting Chou;Dong-Lin Zhong;Chao-Hsu Wen;Chao-Jin Jan;Zi-Ping Chen;Shih-Hsuan Chia

We have obtained sub-megawatt-peak-power femtosecond pulses around 1.3µm driven by a 24-MHz Cr:forsterite oscillator and a piece of optical fiber, by carefully controlling the intracavity dispersion and nonlinear fiber-optic conversion. The compactness of our demonstration with a 24-MHz repetition rate will enable video-rate deep-tissue observation via GFP-based three-photon fluorescence microscopy.

17:05 - 17:20 Manuscript ID.  0646
Paper No.  2020-THU-S0302-O002
Yu-Chun Chen
Award Candidate
Volume holographic light sheet microscopy using Bessel beams for live imaging of Caenorhabditis elegans
Yu-Chun Chen;Ting-Yu Hsieh;Sunil Vyas;Kuang-Yuh Huang;Yuan Luo

To image volumetric biological samples optical sectioning capability is required. Here, we propose a compact Bessel light sheet fluorescence microscope (LSFM) using volume holographic grating (VHG) for real time high resolution volumetric imaging of Caenorhabditis elegans (C. elegans). A photopolymer (PQ-PMMA) based VHG is designed to generate Bessel beam.

17:20 - 17:35 Manuscript ID.  0318
Paper No.  2020-THU-S0302-O003
Lu-Ting Chou
Award Candidate
A compact femtosecond fiber source tunable between 740-1236 nm for wide two-photon fluorescence microscopy applications
Lu-Ting Chou;Yu-Cheng Liu;Dong-lin Zhong;Ming-Che Chan;Shih-Hsuan Chia

By controlling the fiber-optic nonlinearity, we have demonstrated and characterized a compact nJ-level femtosecond fiber source widely-tunable between 740-1236 nm, covering the most two-photon-excitation wavelengths for deep-tissue microscopy applications. We believe the robustness and applicability of this source have made it a promising substitution of Ti:sapphire-based systems for biomedical imaging.

17:35 - 17:50 Manuscript ID.  0283
Paper No.  2020-THU-S0302-O004
Chih-Yuan Tsai
Award Candidate
Sub-terahertz Photoacoustic Pulse Generation using Platinum Nanofilms
Chi-Kuang Sun;Chih-Yuan Tsai

Platinum is strong electron-phonon-coupling metal and is expected to provide ultrahigh frequency photoacoustic pulse. Here we report our study on the sub-terahertz (THz) photoacoustic pulse generation using platinum nanofilms. With an average thickness of 0.9 nm, 0.38 THz central frequency photoacoustic pulse was successfully measured after femtosecond optical excitation.


Quantum Electronics and Laser Technology

Quantum Electronics and Laser Technology S
Friday, Dec. 4, 2020  13:10-15:40
Presider: Prof. Sheng-Lung Huang
Prof. Lung-Han Peng
Room: 6AB Room 325
13:10 - 13:40 Manuscript ID.  0804
Paper No.  2020-FRI-L0303-I001
Invited Speaker:
Jyhpyng Wang

Development of high-field long-wavelength infrared pulses in National Central University
Jyhpyng Wang

High-field long-wavelength infrared pulses are important for the emerging fields of laser-driven proton acceleration and laboratory astrophysics. We present experiments on generating intense single-cycle long-wavelength infrared pulses by using self-phase modulation in laser-plasm interaction as well as our plan of constructing high-field CO2 laser from 1-TW to 100-TW.

13:40 - 14:10 Manuscript ID.  0830
Paper No.  2020-FRI-L0303-I002
Invited Speaker:
YenChieh Huang

High-power Tunable Narrow-line THz Parametric Sources
Ming-Hsiung Wu;Li-Yuan Yang;Yan-Jou Lin;Chang-He Kuo;Bao-Dong To;Yu-Chung Chiu;YenChieh Huang

We report tunable narrow-line kW-class far-infrared laser radiation between 1.8-6
THz from off-axis parametric oscillators using lithium niobate and KTP as gain crystals.
These high-power sources open up high-field applications such as THz nonlinear optics and
particle acceleration.

14:10 - 14:40 Manuscript ID.  0832
Paper No.  2020-FRI-L0303-I003
Invited Speaker:
Ming-Chang Chen

High-Harmonic Ellipsometry
Ming-Chang Chen

Polarization engineering and characterization over a wide spectral range are
essential to investigate the symmetry properties in matter and to control light-matter
interactions. ATTO-EUV laboratory in NTHU for the first time demonstrates that highharmonic ellipsometry, using the polarization degree of freedom, is able to unveil the quantum
nature of the high-order nonlinear dipole response.

14:40 - 15:10 Manuscript ID.  0831
Paper No.  2020-FRI-L0303-I004
Invited Speaker:
Yen-Hung Chen

Integrated Quantum Photonic Sources and Chips
Yen-Hung Chen;Ray-Kuang Lee;Ming-Chang Lee;Chih-Sung Chuu;Tien-Chang Lu;Po-Tsung Lee;Yi-Shan Lee;Shin-Tza Wu;Ching-Yi Lai

We report the study of leading-edge integrated quantum photonic technologies for
realizing scalable photonic quantum chips with the ability to perform fault-tolerant quantum
computation at room temperature. Two qubits CNOT gate for measurement-based computing
has been demonstrated with a highly integrated entangled quantum optical source.

15:10 - 15:25 Manuscript ID.  0093
Paper No.  2020-FRI-L0303-O001
Shou-Tai Lin
Characterization of the noise in cascaded mode-locked Nd:GdVO4 laser
Shou-Tai Lin;Kuang-Ting Zheng

We have measured the intensity noise of a cascaded mode-locked Nd:GdVO4 laser. Adopting 10 mm long KTP crystal and type II nonphase-matched SHG process, the 1.6 – 300 kHz rms intensity fluctuations are reduced from 0.368 to 0.035 by a spectrally controlled VBG.

15:25 - 15:40 Manuscript ID.  0621
Paper No.  2020-FRI-L0303-O002
Shiuan-Yeh Chen
Oligonucleotide guided nanocavities for quantum strong coupling
Shiuan-Yeh Chen

A plasmonic cavity with extreme small mode volume provides a platform for quantum strong coupling to an emitter at room temperature. However, to precisely position an emitter into the cavity is challenging. In this work, we use oligonucleotide (short DNA) to integrate the fluorophores into the plasmonic cavity.


Quantum Electronics and Laser Technology

Poster Session I
Friday, Dec. 4, 2020  15:40-17:30
Presider: Prof. Ja-Hon Lin
Prof. Jung-Chen Tung
Room: 6AB Courtyard
Manuscript ID.  0787
Paper No.  2020-FRI-P0301-P001
Chieh Huang
Award Candidate
High Quality Ta2O5 Nonlinear Waveguide Development And Single Polarization Supercontinuum Generation
Chieh Huang

Through the dispersion engineering and the understanding of the correlation between the various structural parameters of the waveguide and the dispersion, we changed the waveguide structure and matched the SCG mechanism to achieve a single polarized SCG and verified it through the measurement system.

Manuscript ID.  0789
Paper No.  2020-FRI-P0301-P002
Kao Feng Jung
Award Candidate
Tantalum pentoxide nonlinear waveguide and its application for ultra-broadband light source
Kao Feng Jung

We design the channel waveguide by calculating the dispersion engineering, and use E-gun to deposit the Ta2O5 film as the waveguide core, and use light pulse to drive into the optical waveguide to generate SCG. Finally, we explore the transmission behavior of light in the waveguide by using the NLSE.

Manuscript ID.  0119
Paper No.  2020-FRI-P0301-P003
Hsiang-Yu Wang
Award Candidate
10/20 GHz optical frequency stable mode-locked fiber laser with cavity length feedback control
Mei-Chun Chen;Hsiang-Yu Wang;Yinchieh Lai

A 10/20 GHz optical frequency stable mode-locked Er-fiber laser is demonstrated by adding an intra-cavity high Finesse Fabry-Pérot etalon (FSR=10GHz) and employing the cavity length feedback control. Stable laser operation can be maintained within the compensation range of the cavity length feedback control system.

Manuscript ID.  0797
Paper No.  2020-FRI-P0301-P004
Jun-Yu Huang
Award Candidate
Reveal the Mechanism of Current-Voltage Hysteresis in Perovskite Solar Cells using the Poisson and Drift-Di usion Model with Ion Migration Model
Jun-Yu Huang;En-Wen Chang;Yuh-Renn Wu

In this work, a modified Poisson and drift-diffusion solver coupled with a fully time-dependent ion migration model is developed and applied to demonstrate current–voltage hysteresis behavior and analyze how ion migration affects the performance and hysteresis of perovskite solar cells. The modeling results reveal the physical mechanism of hysteresis induced by ion migration. The most crucial factor in the hysteresis behavior is the built-in electric field of the perovskite. Using the developed solver, the non-linear hysteresis curves are demonstrated under different scan rates, and the mechanism of the hysteresis behavior is explained. The findings reveal why the change in hysteresis degree with scan rate is Gaussian shaped rather than monotonic. Additionally, some factors affecting the degree of hysteresis are modeled. The main factors contributing to the degree of hysteresis are determined to be the degree of degradation in the perovskite material, the quality of the perovskite crystal, and the materials that make up the electron transport layer (ETL), which correspond to the total ion density, carrier lifetime of perovskite, and the properties of the ETL, respectively.

Manuscript ID.  0550
Paper No.  2020-FRI-P0301-P005
Zhan-Yao Zhang
Award Candidate
Multiple vector soliton from passive mode-locked Erdoped fiber laser based on graphene oxide
Zhan-Yao Zhang;Zhen-Ying Li;Shwu-Yun Tsay;Yao-Hui Chen;Ja-Hon Lin

Through polarization beam splitter outside cavity, the multiple vector solitons hvave been demonstrated from a mode-locked erbium-doped fiber laser (EDFL) based on the GO/PVA film. Here, the fundtamental mode-locked (FML) soliton was observed in horionztal axis bu the coexiting of FML and multiple soliton was observed in vertical axis.

Manuscript ID.  0545
Paper No.  2020-FRI-P0301-P006
Qi-Yan Zheng
Award Candidate
Characteristics Analysis of Perovskite-Based Surface Plasmon Nanolasers
Qi-Yan Zheng;Pi-Ju Cheng;Tien-Chang Lu;Mao-Kuen Kuo;Tzy-Rong Lin

We systematically studied the characteristics of hybrid perovskite-based surface plasmon nanolasers. If one changes the anion composition of perovskites, the emission wavelength can be easily tuned. We conducted in full-spectrum modeling that featured perovskite nanowires placed on different SiO2-coated metallic (Ag, Al, and Au) plates and exhibited low-transparency threshold-gain.

Manuscript ID.  0682
Paper No.  2020-FRI-P0301-P007
Hamideh Vaezi Kakhki
Award Candidate
Contact Resistance between TMDs and Metals: A First Principles Study
Hamideh Vaezi Kakhki;Long Hsu;Yin-Guo Wang;Ken-Ming Lin

T phase of monolayer MoSe2 as a buffer connected with scandium leads and monolayer MoSe2-H was evaluated. The Density Functional Theory (DFT), Non-Equilibrium Green’s Functions (NEGF) and Landauer formula were used to calculate the current density between two leads. Our strategy can satisfy the industry’s criterial.

Manuscript ID.  0394
Paper No.  2020-FRI-P0301-P008
Wei-Yung Weng
Award Candidate
A Method Of Depressing Mikania Micrantha Growth By Blue Laser Irradiation On Stems
Wei-Yung Weng;Yu-Pin Lan

Here observes the mortality of Mikania Micrantha after irradiating different energy of the laser and variation of the laser beam covering the stem dimension of Mikania Micrantha. This method effectively depresses the Mikania Micrantha growth by exposing stems on a blue laser diode at a wavelength of 455nm.

Manuscript ID.  0521
Paper No.  2020-FRI-P0301-P009
Chieh Lo
Award Candidate
Design and Fabrication of 1310 nm High Power Single-mode Distributed Feedback Laser
Chieh Lo;Shih-Kun Lin;Chao-Hsin Wu

This paper focuses on the design and fabrication of high power single-mode distributed feedback (DFB) lasers. We tuned the grating pitch to analyze and optimize a single-mode 1310nm DFB laser. Ridge waveguide DFB lasers with the optical power of 100mW and SMSR 45dB was fabricated.

Manuscript ID.  0376
Paper No.  2020-FRI-P0301-P010
Shi-Yu Hsiao
Award Candidate
Speed of Light Measurement by Using the Bode Analyzer of Red Pitaya STEMlab
Shi-Yu Hsiao;Zong-Han He;Che-Chung Chou;Tyson Lin

We design a experiment on an optical breadboard by using the Bode analyzer of Red Pitaya STEMlab to measure the light speed. A low-cost laser module is modulated. The modulated light beam is detected at two locations separated by 0.975 m. The error of the measured light speed is 2.01%.


Quantum Electronics and Laser Technology

Quantum Electronics and Laser Technology III
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Yen-Hung Chen
Prof. Ming-Chang Chen
Room: 6AB Room 325
10:30 - 10:45 Manuscript ID.  0418
Paper No.  2020-SAT-S0303-O001
Yin-Wen Lee
Highly Ho3+-doped silicate fiber for short fiber laser applications
Yin-Wen Lee;Yu-Cheng Chang;Yi-Chun Chen;Cheng-Hsien Yu;Ping-Han Tsai;Tzu-Ping Chuang;Han-Chun Chi

We report on the experimental demonstration of heavily Ho3+-doped silicate fiber laser with a gain per unit length of more than 1 dB/cm. A short 2058 nm Ho3+-doped silicate fiber laser has also been presented to confirm the high signal gain per unit length.

10:45 - 11:00 Manuscript ID.  0426
Paper No.  2020-SAT-S0303-O002
Hsin-Ju Peng
A Passively Q-switched Er-doped Fiber Laser Based on ZrSe2
Hsin-Ju Peng;Zhen-Ying Li;Shwu-Yun Tsay;Yao-Hui Chen;Ja-Hon Lin

The ZrSe2 platelets have been used as a saturable absorber to produce the Q-switched pulses from Er-doped fiber laser. The pulse repetition rate increases and pulse duration decreases as pump power increases and shows the highest pulse energy around 139 nJ at the highest pump power of 346 mW.

11:00 - 11:15 Manuscript ID.  0712
Paper No.  2020-SAT-S0303-O003
Shu-Ching LI
Generation and characterization of burst modes in passively mode-locked lasers with internal Fabry-Perot cavities

The generation of burst pulses in a multi-pass passively mode-locked laser is systematically explored. The intracavity mirrors with different thickness was exploited to serve as reflected Fabry-Perot (RFP) cavities in laser resonators.

11:15 - 11:30 Manuscript ID.  0553
Paper No.  2020-SAT-S0303-O004
Li-Yuan Yang
Two-stage Laser Amplifier with Maximum Output Energy
Tzu-Chih Liu;Li-Yuan Yang;Ming-Hsiung Wu;Yen-Chieh Huang

We built a two-stage laser amplifier system with a design to utilize full capacity of the power supply and maximize laser output energy. When seeded with a 0.05-mJ, sub-ns lase pulse at 1064 nm, amplifier can synchronously produce 15-mJ pulse energy from first stage and 120-mJ from second stage amplifier.

11:30 - 11:45 Manuscript ID.  0724
Paper No.  2020-SAT-S0303-O005
Yen Ying Pan
Compact efficient high-power triple-color Nd:YVO4 yellow-lime-green self-Raman lasers
Y.F. Chen;Yen Ying Pan;Y.C. Liu;C.M. Chen;J.Q. Hsiao;C.H. Tsou;H.C. Liang

We report a high-power compact efficient yellow-lime-green triple-color Nd:YVO4 self-Raman laser. The simultaneous three-color operation is accomplished by using three different LBO crystals. By tuning the temperature of each individual LBO crystal, the 588 nm, 559 nm and 532 nm output powers can be nearly concurrently up to 2.4 W.

11:45 - 12:00 Manuscript ID.  0590
Paper No.  2020-SAT-S0303-O006
Chang-He Guo
High-power THz generation from KTP
Yan-Jou Lin;Ming-Hsiung Wu,;Chang-He Guo;Bao Dong To,;Yen-Chieh Huang

We report the detection of 2.26-μJ energy radiation at 5.65 THz from a KTP off-axis THz parametric oscillator with a 24-mJ pump energy and a 2-mJ Stokes energy. With a measured pulse width of 82.5 ps, the peak power of the generated far-IR radiation is 27.4 kW.

12:00 - 12:15 Manuscript ID.  0483
Paper No.  2020-SAT-S0303-O007
An-Yuan Liang
Nonlinear pulse compression of an Yb:KGW amplifier by a gas-filled multi-pass cell
An-Yuan Liang;Chia-Lun Tsai;Ming-Chang Chen;Shang-Da Yang

We have demonstrated pulse compression of an Yb:KGW amplifiers by a gas-filled multi-pass cell. The transform-limited pulse is reduced from 170 fs to 24 fs with a power throughput of 90%. The M2 values are 1.12 and 1.17 in x- and y- direction.

12:15 - 12:30 Manuscript ID.  0659
Paper No.  2020-SAT-S0303-O008
Tien-Dat Pham
Electro-Optic Spectral Tuning in Multi-Wavelength Optical Parametric Oscillator Using Nonperiodically Poled Lithium Niobate
Tien-Dat Pham;Shue-Shan Lin;Lin-Ming Deng;Quan-Hsiang Tseng;Hung-Pin Chung;Wei-Kun Chang;Yen-Hung Chen

We report electro-optic (EO) spectral tuning of a multi-wavelength intracavity optical parametric oscillator (IOPO) based on a nonperiodically poled lithium niobate (NPPLN) constructed with a genetic algorithm. An EO spectral tuning rate of ~0.56 nm/(kV/mm) in this dual-signal NPPLN IOPO in telecom bands is achieved.


Quantum Electronics and Laser Technology

Quantum Electronics and Laser Technology IV
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Sheng-Kwang Hwang
Prof. Kuei-Huei Lin
Room: 6AB Room 625
10:30 - 10:45 Manuscript ID.  0338
Paper No.  2020-SAT-S0304-O001
Hao-Tien Cheng
Single-mode operation of an 850 nm MR VCSEL with a circular metal contact for spatial filtering
Hao-Tien Cheng;Szu-Yu Min;Jian-Syun Pan;Wei-Hao Lin;Chao-Hsin Wu

We have incorporated a metal ring to act as an effective mode-selection filter to suppress the emission of the higher-order modes. The 850 nm MR VCSEL with a 3 μm MR in diameter exhibits an output power of 0.83 mW and SMSR of 40.2 dB when biased at 4 mA.

10:45 - 11:00 Manuscript ID.  0478
Paper No.  2020-SAT-S0304-O002
Wei-Hao Lin
Thermally-stable VCSEL for up to 12.81 GHz operation at 85 oC
Wei-Hao Lin;Hao-Tien Cheng;I-Chien Chen;Jian-Syun Pan;Chao-Hsin Wu

We present results of our 850 nm thermally-stable vertical cavity surface-emitting lasers (VCSELs). With a strained InGaAs/AlGaAs quantum well design optimized for high-speed operation at higher operating temperature, the 3dB modulation bandwidth of InGaAs QW oxide ~4.6 µm aperture diameter reaches 12.81 GHz at 85 oC.

11:00 - 11:15 Manuscript ID.  0342
Paper No.  2020-SAT-S0304-O003
Ming Chang Shih
The Formation of Hybrid Resonant Cavities in the Semiconductor Circular Ring Laser Diode by Conjugate Reflection and its Output Characteristics
Ming Chang Shih;Chun Ting Tsen

We present the formation of hybrid resonators by conjugate reflection in the semiconductor circular ring laser diode. The L-I and spectrum measurements of mode spacing of Y-junction coupler waveguide terminal and the Soilton waveguide terminal were studied to verify the formation of these hybrid resonators.

11:15 - 11:30 Manuscript ID.  0412
Paper No.  2020-SAT-S0304-O004
Kai-Hsun Chang
Generation of Yellow-Orange Multi-wavelength Laser from chi(2) Photonic Crystals
Kai-Hsun Chang;To-Fan Pan;Chia-Chun Fan;Safia Mohand Ousaid;Chih-Ming Lai;‪Azzedine Boudrioua;Katrin Paschke;Hidefumi Akiyama;Hiroyuki Yokoyama;Lung-Han Peng

Five-peaks in orange-yellow band (580~595 nm) laser source was demonstrated by using intra-cavity second harmonic generation technique on periodically-poled-lithium-tantalate (PPLT). The slope efficiency and threshold of the device are 14.63 % and 60 MW/cm2. Further, we also propose another design to achieve tunable source from 550 nm to 605 nm.

11:30 - 11:45 Manuscript ID.  0796
Paper No.  2020-SAT-S0304-O005
Cheng-Han Ho
3-Band Simulation Model for MoS2 Nanoribbon based Intermediate Band Solar Cells
Cheng-Han Ho;Yuh-Renn Wu

To increase the eciency of the solar cell, a three-bands Poisson and drift-di usion model is developed to simulate the intermediate band (IB) of MoS2 nanoribbon solar cell, which could absorb the low energy photons through the IB to the conduction band. The new model shows that under certain condition, the short circuit current increases signi cantly. However, to maintain the high open circuit voltage, the downward transition rate needs to be limited.


Quantum Electronics and Laser Technology

Poster Session II
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Wen-Jeng Ho
Room: 6AB Courtyard
Manuscript ID.  0224
Paper No.  2020-SAT-P0302-P001
Ming-Hsiung Wu
Anisotropic Off-axis Raman Oscillator
Ming-Hsiung Wu;Yan-Jou Lin;Fredrik Laurell;Yen-Chieh Huang

We present a mirrorless Raman oscillator built upon a monolithic KTP crystal. When pumped by a pulse laser at 1064 nm, the oscillator generates a single off-axis-mode Stokes output with a 30% optical efficiency.

Manuscript ID.  0112
Paper No.  2020-SAT-P0302-P002
Yuan-Yao Lin
Q-switched mode-locked Vortex Laser Formed by Coherent Superposion of Off-axis Traveling Waves
Cheng-Yu Hsieh;Yuan-Yao Lin

Qswitched mode-locking operation was observed in a vortex laser formed by su-
perposition of off-axis resonating traveling waves. When self-modulation is enhanced by pump
power dependent relaxation oscillations, QML can be stabilized.

Manuscript ID.  0788
Paper No.  2020-SAT-P0302-P003
Guan-Hong Li
Development and the optical nonlinearity investigation of High quality E-gun evaporation growth Tantalum Pentoxide (Ta2O5)thin film
Guan-Hong Li

In recent years, the rapid development of optical communication has increased the research on nonlinear optical components. We use an electron beam thermal evaporation machine to prepare tantalum pentoxide film, and use AFM, XRD, XPS and Z-scan to confirm the film characteristics.

Manuscript ID.  0459
Paper No.  2020-SAT-P0302-P004
Wei Jo Ting
Efficient EUV Spectrometer in a Conical Diffraction Geometry
Wei Jo Ting;Ming-Shian Tsai;Yi Ting Lee;Li Han Cheng;Ming-Chang Chen

We develop a broadband wavelength extreme-ultraviolet spectrometer. For higher efficiency, conical diffraction mounting gratings are installed. High harmonic generation combined such spectrometer provides monochromatic EUV ranging from 40 eV to 120 eV. The diffraction pattern, spectral lines and flux are measured and compared.

Manuscript ID.  0332
Paper No.  2020-SAT-P0302-P005
I-Che Peng
Investigation of the Laser Ablation Quality by Using Machine Learning Based upon Data Science
Chien-Chung Tsai;I-Che Peng;Po-Han Chen

This study investigates the ablation phenomenon of micro fabrication in green laser applied to CMOS-MEMS components. And through data science and machine learning successfully predict the quality level of ablation by using the random forest algorithm to achieve an accuracy of 96.22%.

Manuscript ID.  0305
Paper No.  2020-SAT-P0302-P006
Shu-Yu Chang
Fringe-resolved Autocorrelation for Ultrashort Pulse Compression
Shu-Yu Chang;Chia-Yuan Chang;Jui-Chi Chang

The ultrashort laser pulsewidth is an important parameter for nonlinear optical effect. In this paper, we setup a fringe-resolved autocorrelator to determine the laser pulsewidth. The pulsewidth is taken as a feedback signal to compensate the group delay dispersion (GDD) to obtain the transform-limit pulsewidth for best laser performance.

Manuscript ID.  0766
Paper No.  2020-SAT-P0302-P007
Heng-Yu Lin
Direct observation of dynamic thermal lensing in an end-pumped Nd:YVO4 laser
Heng-Yu Lin

We took the Nd:YVO4 laser crystal as the sample and use the nanometer optical ruler with
the center wavelength of 638nm to detect the thermal lens effect under different 808nm pump powers.
With different pump powers, there will be different speeds and behaviors, and observe the phenomenon
of thermal expansion.

Manuscript ID.  0237
Paper No.  2020-SAT-P0302-P008
Yi-Yun Liu
Uidirectional Photoluminescence Enhance Via Tamm Plasmon Polaritons with Dye Doped Polymers
Yi-Yun Liu;Jhen-Hong Yang;Kuo-Ping Chen

Tamm plasmon polariton resonance is observed in the band gap of 1D photonic crystal-distributed Bragg reflector (DBR) coating with polyvinyl alcohol (PVA) and metals. Due to the sharp resonance, TPP provided a high-quality factor interface state resonance at the visible wavelength. We measured the photoluminescence enhancement caused by Tamm mode.

Manuscript ID.  0225
Paper No.  2020-SAT-P0302-P009
Ho-Chun Huang
D-A Type of Electron Donor Molecules for Polymer Solar Cell
Ho-Chun Huang;Yu-Wei Su;Po-Tuan Chen

We selected the DFT/B3LYP/6-31+g(d) and TDA/B3LYP/6-31+g(d) method to an investigated molecular structure. We found that the methoxy group promotes the increase of the HOMO energy level compared with other functional groups. It also improves the composition of second excited state and keep the internal charge transfer.

Manuscript ID.  0597
Paper No.  2020-SAT-P0302-P010
Wu Hsiu Ting
The Impact of Extracavity Frequency Doubling in Infrared Yb-doped Pulsed Fiber Laser by Focusing Beam Size in a Nonlinear Crystal
Wu Hsiu Ting

In this article, we demonstrate the impact of external cavity frequency doubling efficiency by varying the fundamental laser beam size in a nonlinear crystal. The laser beam waist in the nonlinear crystal is 28μm can get the highest SHG power. Simultaneously, the frequency conversion efficiency reaches to 10.63%.