Pulse laser injection seeded state detector and experimental research

PAN Yisheng; YAN Zhaoai; GUO Wenjie; XU Qingchen; HU Xiong

doi:10.7510/jgjs.issn.1001-3806.2016.02.001

To avoid the influences of unseeded laser pulses on wind speed measurement of incoherent Doppler wind lidar, a detector of pulse laser injection seeded state was designed and implemented based on the principle of different laser pulse building time of the injection seeded and unseeded state. The time measurement accuracy of the detector was 45ps, time measurement range was from 3.5ns to 2500ns, and the highest pulse repetition rate was up to 1kHz. The experiment of injection seeded state detection was conducted with the detector. The results show that laser pulse building time of the injection seeded state is 123.27ns, less than 134.44ns of the unseeded state. The proportion of injection unseeded laser pulses to total laser pulses is 8.54% within 1.35h. The pulse laser injection seeded state detector can effectively detect and discriminate the injection seeded and unseeded laser pulses. The detector has a potential value to improve wind speed measurement reliability of Doppler wind lidar.

Pulse laser injection seeded state detector and experimental research

Corresponding author: XU Qingchen, xqc@nssc.ac.cn;

1. Laboratory of Nearspace, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China;

2. School of Earth Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2015-01-26

Accepted Date: 2015-02-12

Available Online: 2016-03-25

Abstract: To avoid the influences of unseeded laser pulses on wind speed measurement of incoherent Doppler wind lidar, a detector of pulse laser injection seeded state was designed and implemented based on the principle of different laser pulse building time of the injection seeded and unseeded state. The time measurement accuracy of the detector was 45ps, time measurement range was from 3.5ns to 2500ns, and the highest pulse repetition rate was up to 1kHz. The experiment of injection seeded state detection was conducted with the detector. The results show that laser pulse building time of the injection seeded state is 123.27ns, less than 134.44ns of the unseeded state. The proportion of injection unseeded laser pulses to total laser pulses is 8.54% within 1.35h. The pulse laser injection seeded state detector can effectively detect and discriminate the injection seeded and unseeded laser pulses. The detector has a potential value to improve wind speed measurement reliability of Doppler wind lidar.

HTML

Reference (15)

[1]	CHANIN M L, GARNIER A, HAUCHECORNE A, et al. A Doppler lidar for measuring winds in the middle atmosphere[J]. Geophysical Research Letters, 1989, 16(11):1273-1276.
[2]	CHOI S, BAIK S, PARK S, et al. Development of single-filter Doppler signal discrimination method for incoherent Doppler lidar system[J]. Optica Applicata, 2012, 42(3):545-553.
[3]	DU J, REN D M, ZHAO W J, et al. Theoretical description of improving measurement accuracy for incoherence Mie Doppler wind lidar[J].Chinese Physics, 2013, B22(2):024211.
[4]	TANG L, WU H B, SUN D S, et al. Design and calibration of the Fabry-Perot etalon in Rayleigh backscattering Doppler wind lidar[J]. Laser Technology, 2014, 38(2):283-288(in Chinese).
[5]	WANG Q, WANG Q, CHENG Y L. Effect of transmitted laser linewidth on wind measurement of direct detection lidar using double-edge technique[J]. High Power Laser and Particle Beams, 2008, 20(11):1851-1854(in Chinese).
[6]	WANG Q, WANG Q, CHENG Y L. Influence of transmitted-laser linewidth on sensitivity and error of double-edge wind lidars[J]. Journal of Russian Laser Research, 2008, 29(4):390-397.
[7]	KOECHNER W. Solid-state laser engineering[M].Beijing:Science Press, 2002:223(in Chinese).
[8]	WANG J T, ZHU R, ZHOU J, et al. Conductively cooled 1kHz single-frequency Nd:YAG laser for remote sensing[J].Chinese Optics Letters, 2011, 9(8):081405.
[9]	HAYASHI S, NAWATA K, SAKAI H, et al. High-power, single-longitudinal-mode terahertz-wave generation pumped by a microchip Nd:YAG glaser[J]. Optics Express, 2012, 20(3):2881-2886.
[10]	CHEN W B, ZHOU J, LIU J Q. Doppler lidar and it's all solid-state single frequency laser[J]. Infrared and Laser Engineering, 2008, 37(1):57-60(in Chinese).
[11]	BARNES J C, BARNES N P. Injection seeding.Ⅰ.Theory[J]. IEEE Journal of Quantum Electronics, 1993, 29(10):2670-2683.
[12]	GUO S F, LIN W X, LI Q. Single axial and transverse mode electro-optic Q-switched laserbased on injection-seeding technique and self-filtering unstable resonator[J]. Chinese Journal of Lasers, 2006, 33(12):1585-1589(in Chinese).
[13]	LIU Z, WU S, LIU B. Seed injection and frequency-locked Nd:YAG laser for direct detection wind lidar[J]. Optics Laser Technology, 2007, 39(3):541-545.
[14]	DAI T Y, JU Y L, YAO B Q, et al. Single-frequency, Q-switched Ho:YAG laser at room temperature injection-seeded by two F-P etalons-restricted Tm, Ho:YAG laser[J]. Optics Letters, 2012, 37(11):1850-1852.
[15]	WANG T. Injection seeded Q-switch laser system principle and technology research[D]. Xi'an:Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, 2001:10-15(in Chinese).

Pulse laser injection seeded state detector and experimental research

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views