Characteristics of Single Resonant Nanosecond Pulse Optical Parametric Oscillator with Output Wavelength of 2.05 μm

XIE Xiaobing1,2 LI Shiguang1 ZHU Xiaolei1 ZHANG Junxuan1 DONG Yijing1,2 CHEN Weibiao1

(1.Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China 201800)
(2.University of Chinese Academy of Sciences, Beijing, China 100049)

【Abstract】A KTP crystal extra-cavity single-resonant optical parametric oscillator (OPO) pumped by 1 064 nm single-frequency laser is reported, and the nanosecond laser pulse output with wavelength of 2.05 μm is obtained. In the plane-parallel cavity, two type II phase-matched KTP crystals are placed in walk-off-compensated mode. When the pump single pulse energy reaches 5 mJ at the repetition frequency of 400 Hz, a 2.05 μm signal laser output with the single pulse energy of 0.9 mJ is obtained, whose pulse width is about 3.7 ns, the corresponding pump-to-signal conversion efficiency is about 18%, and the beam quality factors M2 are 2.08, 3.03 in x, y directions, respectively.A KTP crystal extra-cavity single-resonant optical parametric oscillator(OPO)pumped by 1064nm single-frequency laser is reported,and the nanosecond laser pulse output with wavelength of 2.05μm is obtained.In the plane-parallel cavity,two type II phase-matched KTP crystals are placed in walk-off-compensated mode.When the pump single pulse energy reaches 5 mJ at repetition frequency of 400 Hz,a 2.05μm signal laser output with single pulse energy of 0.9 mJ is obtained,whose pulse width is about 3.7ns,the corresponding conversion efficiency is about 18%from pump light to signal light,and the beam quality factor M2are 2.08,3.03in x,y directions,respectively.

【Keywords】 nonlinear optics; optical parametric oscillator; 2 μm laser; KTP crystal;

【DOI】

【Funds】 National Natural Science Foundation of China (61505230)

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(Translated by LIU T)

    References

    1 Li L, Zhang B, Yin K, et al. 1mJ nanosecond all-fiber thulium-doped fiber laser at 2. 05μm [J]. Optics Express, 2015, 23 (14): 18098–18105.

    2 Zhu Yachen, Lan Ge, Li Tong, et al. 2 μm KTiOAsO4 optical parametric oscillator [J]. Acta Optica Sinica, 2007, 27 (11): 2059–2063 (in Chinese).

    3 Wang Li, Yang Jingwei, Cai Xuwu, et al. 2.09 μm nanosecond holmium laser pumped ZnGeP2 optical parametric oscillator [J]. Chinese J Lasers, 2014, 41 (1): 0102008 (in Chinese).

    4 Xie Gang, Peng Yuefeng, Lu Yanhua, et al. High efficiency 23. 6 W 2 μm laser [J]. Chinese J Lasers, 2007, 34 (11): 1488–1491 (in Chinese).

    5 Peng Yuefeng, Xie Gang, Wang Weimin, et al. Intracavity optical parametric oscillator high-repetition-rate 2 μm laser with 46 W output power [J]. Chinese J Lasers, 2009, 36 (1): 33–36 (in Chinese).

    6 Deng Huarong, Zhang Long, Xie Yuzhou, et al. Low threshold 2μm laser based on optical parametric oscillator using PPMgLN [J]. Chinese J Lasers, 2013, 40 (7): 0702014 (in Chinese).

    7 Koch G J, Beyon J Y, Gibert F, et al. Side-line tunable laser transmitter for differential absorption lidar measurements of CO2: Design and application to atmospheric measurements [J]. Applied Optics, 2008, 47 (7): 944–956.

    8 Raybaut M, Schmid T, Godard A, et al. High-energy single-longitudinal mode nearly diffraction-limited optical parametric source with 3 MHz frequency stability for CO2 DIAL [J]. Optics Letters, 2009, 34 (13): 2069–2071.

    9 Wu C T, Ju Y L, Chen F, et al. Research on 2μm solid-state lasers [J]. Laser Physics, 2012, 22 (4): 635–647.

    10 Wu Yue, Zhai Gang, Yao Zhihai. The development of 2 μm wave band laser [J]. Laser Journal, 2008, 29 (4): 1–2 (in Chinese).

    11 Meng Dongdong, Tang Gangfeng, Shen Zhaoguo, et al. 2.12 μm laser pumped by Zig-Zag slab [J]. Journal of Applied Optics, 2012, 33 (5): 991–995 (in Chinese).

    12 Wang Zijian, Jin Guangyong, Yu Yongji, et al. 2. 1μm optical parametric oscillator based on high-repetition Q-switch Nd∶YVO4laser [J]. Infrared and Laser Engineering, 2015, 44 (9): 2638–2642 (in Chinese).

    13 Barrientos B J, Mammez D, Cadiou E, et al. Multispecies high-energy emitter for CO2, CH4, and H2O monitoring in the 2 μm range [J]. Optics Letters, 2014, 39 (23): 6719–6722.

    14 Walter Koechner. Solid-state laser engineering [M]. Rev 6th ed. New York: Springer, 2010: 649–651.

    15 Arisholm G, Lippert E, Rustad G, et al. Efficient conversion from 1 to 2 μm by a KTP-based ring optical parametric oscillator [J]. Optics Letters, 2002, 27 (15): 1336–1338.

    16 Arisholm G, Nordseth O, Rustad G. Optical parametric master oscillator and power amplifier for efficient conversion of high-energy pulses with high beam quality [J]. Optics Express, 2004, 12 (18): 4189–4197.

    17 Zhang J X, Zhu X L, Ma X H, et al. Stable seeder-injected Nd:YAG pulsed laser using a RbTiOPO4 phase modulator [J]. Chinese Optics Letters, 2015, 13 (11): 111404.

This Article

ISSN:0258-7025

CN: 31-1339/TN

Vol 43, No. 12, Pages 234-238

December 2016

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Article Outline

Abstract

  • 1 Introduction
  • 2 Experimental setup
  • 3 Experimental results and analysis
  • 4 Conclusions
  • References