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13:00 - 13:30
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Manuscript ID. 0891
Paper No. 2022-SAT-S0304-I001
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Invited Speaker:
Ming-Chang Chen
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Generation of isolated-attosecond pulses driven by a post-compressed Yb laser
An-Yuan Liang, Ming-Shian Tsai, Yu-Zhi Fu, Yu-En Chien, Ming-Chang Chen, National Tsing Hua University (Taiwan)
We introduce a new post-compression to achieve 50-fold compression of millijoule-level pulses at 1030 nm from 157 fs to 3.1 fs, with an output pulse energy of 0.98 mJ and an overall efficiency of 73%. When driving high-harmonic generation, these singlecycle pulses enable the creation of isolated ≈ 290-attosecond pulses.
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13:30 - 13:45
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Manuscript ID. 0564
Paper No. 2022-SAT-S0304-O001
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| Hsu-hsin Chu
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Single-Attosecond-Pulse X-Ray Source from High-Harmonic Generation
Hsu-hsin Chu, National Central University (Taiwan); Yao-Li Liu, National Cheng Kung University (Taiwan); Jyhpyng Wang, Academia Sinica (Taiwan)
A new scheme of ion-based, phase-matched high-harmonic generation is proposed. It is inherently a single-attosecond-pulse x-ray source. The time-dependent phase-matching condition gates the output to be a single-attosecond pulse with a duration as short as 50 attoseconds. The scheme can be operated from water-window soft x-ray to 1.5-keV hard x-ray.
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13:45 - 14:00
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Manuscript ID. 0328
Paper No. 2022-SAT-S0304-O002
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| Chien-Hsiang Chiu
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High Power 940 nm Tunnel Junction VCSEL for Depth Sensing
Chien-Hsiang Chiu, Yi-Hong Bai, Zhi-Kuang Lu, Wei-Ta Huang, Hao-Chung Kuo, National Yang Ming Chiao Tung University (Taiwan)
In this study, we design the structure of the Vertical-Cavity Surface-Emitting Laser (VCSEL) tunnel junction to improve the insufficient output power and conversion efficiency for medium- and long-distance sensing by numerical simulation. Through analyzing the thickness, doping concentrations, and oxide layer of the tunnel junction to optimize the performance of the 940 nm tunnel junction VCSEL.
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14:00 - 14:15
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Manuscript ID. 0131
Paper No. 2022-SAT-S0304-O003
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| Cheng-Chun Chen
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Thermal characteristics under the short pulse measurement of high power VCSEL array
Cheng-Chun Chen, Wei-Hao Huang, Kuo-Bin Hong, Tien-Chang Lu, National Yang Ming Chiao Tung University (Taiwan)
We build a system to analyze single VCSEL’s thermal characteristics, and extend it to the
VCSEL array. We also verify the VCSEL’s performance under different short pulse conditions by
simulation and measurement. Throughout the study, we theoretically and experimentally show that the
VCSEL array’s performance is significantly affected by the thermal effect
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14:15 - 14:30
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Manuscript ID. 0036
Paper No. 2022-SAT-S0304-O004
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| Shin-Lin Tsai
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Tunable dual-wavelength optically pumped semiconductor laser using birefringence plate
Shin-Lin Tsai, Chun-Yu Cho, National United University (Taiwan)
A tunable dual wavelength optically pumped semiconductor laser (OPSL) is demonstrated by using the birefringence plate (BRF). The wavelength spacing can be significantly varied by selecting proper material. Furthermore, the wavelength spacing can be slightly adjusted by changing the BRF thickness. Finally, the central wavelength can also be adjusted by controlling the temperature of the gain chip.
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14:30 - 14:45
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Manuscript ID. 0521
Paper No. 2022-SAT-S0304-O005
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| Chih-Yao Hsu
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3D Printed PQ/PMMA for VBG recording
Chih-Yao Hsu, Te-Yuan Chung, National central university (Taiwan)
A 3D printed PQ/PMMA was successfully made by Doping PQ within transparent resin. A PQ-resin dropping surface treatment makes VBG recording possible. 3D printed VBG has been successfully used as a laser mode control element. The fabrication time and preparation procedures have been greatly reduced.
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14:45 - 15:00
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Manuscript ID. 0202
Paper No. 2022-SAT-S0304-O006
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| Hsuan-Sen Wang
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Mode-locked Erbium-doped fiber laser With Covalent Organic Framework (COF) saturable absorber
Hsuan-Sen Wang, Ahmed F. M. EL Mahdy, Shiao-Wei Kuo, National Sun Yat-sen University (Taiwan); Gong-Ru Lin, National Taiwan University (Taiwan); Chao-Kuei Lee, National Sun Yat-sen University (Taiwan)
This work investigated the feasibility of using COF for mode-locked fiber lasers in the L band region. The mode-locked Er-doped fiber laser with 445fs pulse width,0.12 nJ pulse energy, and 14.72MHz repetition rates was demonstrated. In addition, the mechanism of mode-locking is also discussed.
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15:00 - 15:15
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Manuscript ID. 0390
Paper No. 2022-SAT-S0304-O007
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| Sheng-Wen Cheng
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The Development of Integrated Optoelectronic Amplifiers and Thermal Sensors Using Light-Emitting Transistors circuits
Sheng-Wen Cheng, Lu-Ching Hsueh, Shu-Jui Hsu, Mukul Kumar, Chao-Hsin Wu, National Taiwan University (Taiwan)
The research shows that Darlington LET's current gain and optical light output under VCE = 3 V and IB = 1 mA at ambient temperature enhances 125.76 % and 153.25 % more than single LET, respectively. In addition, the Darlington pair circuit will increase the current gain with a temperature (T) function. The current gain of Darlington LET improves 231.43 % from room temperature to 358K, which is desirable for the high-resolution thermal sensor.
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