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논문 기본 정보

자료유형
학술저널
저자정보
Bing-Yan Chen (Changchun University of Science and Technology) Yu-Heng Wang (Changchun University of Science and Technology) Yong-Ji Yu (Changchun University of Science and Technology) Guang-Yong Jin (Changchun University of Science and Technology)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.5 No.2
발행연도
2021.4
수록면
186 - 190 (5page)

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초록· 키워드

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In this study, a compact, picosecond, mid-infrared 3.8 μm MgO:PPLN optical parametric oscillator (OPO) laser output with high peak power is realized using a master oscillator power amplifier (MOPA) 1 μm solid-state laser seeded by a picosecond fiber laser as the pump source. The pump source was a 50 MHz and 10 ps fiber seed source. After AOM pulse selection and two-stage solid-state amplification, a 1,064 nm laser output with a repetition frequency of 1–2 MHz, pulse width of 9.5 ps, and a maximum average power of 20 W was achieved. Furthermore, a compact short cavity with a unsynchronized pump is adopted through the design of an OPO cavity structure. When the injection pump power was 15 W and the repetition frequency was 1 MHz, the average output power of idler light was 1.19 W, and the corresponding peak power was 119 kW. The optical conversion efficiency was 7.93%. When the repetition frequency was increased to 2 MHz, the average output power of idler light was 1.63 W, the corresponding peak power was 81.5 kW, and the optical conversion efficiency was 10.87%. At the same time, the output wavelength was measured at 3,806 nm, and the beam quality was M<SUB>X</SUB>² = 3.21 and M<SUB>Y</SUB>² = 3.34.

목차

Ⅰ. INTRODUCTION
Ⅱ. EXPERIMENTAL SETUP
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. CONCLUSION
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