| Citation: | PAN Qi-kun, MIAO Fang-chen, SI Hong-Li, SHEN Hui, GAO Fei, YU De-Yang, ZHANG Kuo, ZHANG Ran-ran, ZHAO Chong-Xiao, CHEN Fei, GUO Jin. Compact pulsed CO2 laser with wavelength automatic tuning[J]. Chinese Optics, 2022, 15(5): 1007-1012. doi: 10.37188/CO.2022-0107
|
In order to meet the application requirements of airborne laser differential absorption lidar for small and lightweight light sources, a compact pulsed CO2 laser is developed with automatic wavelength tuning. First, the aperture matching relationship between an RF waveguide intracavity beam and a free space optical chopper beam was studied, and a beam conversion system was designed with real focus on the intracavity. The influence of the chopper aperture on a laser pulse waveform was verified experimentally. Secondly, the wavelength tuning characteristics of CO2 laser were studied, and the diffraction angle difference between adjacent laser spectral lines was analyzed. Tunable operation in the CO2 laser was realized using a high-precision electric turntable and metal blazed grating. Finally, the integration of a compact automatic tuning pulsed CO2 laser was completed using small lightweight modules. Experimental results indicate that the laser operates stably at 1 kHz with a pulse width of 350 ns and a peak power of 3.7 kW. There are 30 lines within 9.2~10.7 μm waveband. The total weight of the laser is 18 kg. It provides a miniaturized detection light source for airborne laser differential absorption lidar.
| [1] |
CAO ZH, WEI CH Y, CHENG X, et al. Ground fused silica processed by combined chemical etching and CO2 laser polishing with super-smooth surface and high damage resistance[J]. Optics Letters, 2020, 45(21): 6014-6017. doi: 10.1364/OL.409857
|
| [2] |
高月娟, 陈飞, 潘其坤, 等. 用于超短脉冲CO2激光的半导体光开关理论建模与数值分析[J]. 中国光学,2020,13(3):577-585.
GAO Y J, CHEN F, PAN Q K, et al. Modeling and numerical simulation of a semiconductor switching device applied in an ultra-short pulse CO2 laser[J]. Chinese Optics, 2020, 13(3): 577-585. (in Chinese)
|
| [3] |
袁志国, 马修真, 刘晓楠, 等. 利用可调谐激光吸收光谱技术的柴油机排放温度测试研究[J]. 中国光学,2020,13(2):281-289. doi: 10.3788/co.20201302.0281
YUAN ZH G, MA X ZH, LIU X N, et al. Testing on diesel engine emission temperature using tunable laser absorption spectroscopy technology[J]. Chinese Optics, 2020, 13(2): 281-289. (in Chinese) doi: 10.3788/co.20201302.0281
|
| [4] |
FAN S Y, HEALY N. CO2 laser-based side-polishing of silica optical fibers[J]. Optics Letters, 2020, 45(15): 4128-4131. doi: 10.1364/OL.397939
|
| [5] |
HE T, WEI CH Y, JIANG ZH G, et al. Numerical model and experimental demonstration of high precision ablation of pulse CO2 laser[J]. Chinese Optics Letters, 2018, 16(4): 041401. doi: 10.3788/COL201816.041401
|
| [6] |
POLYANSKIY M N, POGORELSKY I V, BABZIEN M, et al. Demonstration of a 2 ps, 5 TW peak power, long-wave infrared laser based on chirped-pulse amplification with mixed-isotope CO2 amplifiers[J]. OSA Continuum, 2020, 3(3): 459-472. doi: 10.1364/OSAC.381467
|
| [7] |
曾庆栋, 袁梦甜, 朱志恒, 等. 便携式激光诱导击穿光谱最新研究进展[J]. 中国光学,2021,14(3):470-486. doi: 10.37188/CO.2020-0093
ZENG Q D, YUAN M T, ZHU ZH H, et al. Research progress on portable laser-induced breakdown spectroscopy[J]. Chinese Optics, 2021, 14(3): 470-486. (in Chinese) doi: 10.37188/CO.2020-0093
|
| [8] |
RUAN P, PAN Q K, XIE J J, et al. Rapidly tunable pulsed CO2 laser based on acoustic-optic modulator[J]. Infrared Physics &Technology, 2018, 92: 299-303.
|
| [9] |
TEHRANI M K, MOHAMMAD M M, JAAFARI E, et al. Setting up a mobile Lidar (DIAL) system for detecting chemical warfare agents[J]. Laser Physics, 2015, 25(3): 035701. doi: 10.1088/1054-660X/25/3/035701
|
| [10] |
PAL A, CLARK C D, SIGMAN M, et al. Differential absorption lidar CO2 laser system for remote sensing of TATP related gases[J]. Applied Optics, 2009, 48(4): B145-B150. doi: 10.1364/AO.48.00B145
|
| [11] |
KARAPUZIKOV A I, PTASHNIK I V, SHERSTOV I V, et al. Modeling of helicopter-borne tunable TEA CO2 DIAL system employment for detection of methane and ammonia leakages[J]. Infrared Physics &Technology, 2000, 41(2): 87-96.
|
| [12] |
SZINICZ L. History of chemical and biological warfare agents[J]. Toxicology, 2005, 214(3): 167-181. doi: 10.1016/j.tox.2005.06.011
|
| [13] |
BANDINI F, SUNDING T P, LINDE J, et al. Unmanned Aerial System (UAS) observations of water surface elevation in a small stream: comparison of radar altimetry, LIDAR and photogrammetry techniques[J]. Remote Sensing of Environment, 2020, 237: 111487. doi: 10.1016/j.rse.2019.111487
|
| [14] |
PODOSKI J H, SMITH T D, FINNEGAN D C, et al. Unmanned aerial system lidar survey of two breakwaters in the Hawaiian islands[J]. Coastal Engineering Proceedings, 2018, 1(36): 23. doi: 10.9753/icce.v36.structures.23
|
| [15] |
XIE J J, PAN Q K, GUO R H, et al. Dynamical analysis of acousto-optically Q-switched CO2 laser[J]. Optics and Lasers in Engineering, 2012, 50(2): 159-164. doi: 10.1016/j.optlaseng.2011.09.014
|
| [16] |
ZHANG Y CH, TIAN ZH SH, SUN ZH H, et al. Study of frequency stabilization for electro-optical Q-switched radio-frequency-excited waveguide CO2 laser using build-up time method[J]. Applied Optics, 2013, 52(16): 3732-3736. doi: 10.1364/AO.52.003732
|
| [17] |
潘其坤, 陈飞, 石宁宁, 等. 声光调Q CO2激光器波长调谐理论分析与实验研究[J]. 红外与激光工程,2017,46(7):0705002. doi: 10.3788/IRLA201746.0705002
PAN Q K, CHEN F, SHI N N, et al. Theoretical analysis and experimental research on tunable acousto-optic Q-switched CO2 laser[J]. Infrared and Laser Engineering, 2017, 46(7): 0705002. (in Chinese) doi: 10.3788/IRLA201746.0705002
|
Figures(6)
DownLoad:
