声光偏转快调谐脉冲CO<sub>2</sub>激光器实验研究

潘其坤; 俞航航; 陈飞; 谢冀江; 何洋; 于德洋; 张阔

doi:10.3788/CO.20191202.0355

Volume 12 Issue 2

Apr. 2019

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Article Contents

Chinese Optics > 2019 > 12(2): 355-361.

PAN Qi-kun, YU Hang-hang, CHEN Fei, XIE Ji-jiang, HE Yang, YU De-yang, ZHANG Kuo. Experimental research on acousto-optic deflection rapid tuning pulsed CO2 lasers[J]. Chinese Optics, 2019, 12(2): 355-361. doi: 10.3788/CO.20191202.0355

Citation:

PAN Qi-kun, YU Hang-hang, CHEN Fei, XIE Ji-jiang, HE Yang, YU De-yang, ZHANG Kuo. Experimental research on acousto-optic deflection rapid tuning pulsed CO₂ lasers[J]. Chinese Optics, 2019, 12(2): 355-361. doi: 10.3788/CO.20191202.0355

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Experimental research on acousto-optic deflection rapid tuning pulsed CO₂ lasers

doi: 10.3788/CO.20191202.0355

PAN Qi-kun^{1, 2
,
,},
YU Hang-hang^{2, 3},
CHEN Fei^{1, 2},
XIE Ji-jiang²,
HE Yang²,
YU De-yang²,
ZHANG Kuo²

1.
State Key Laboratory of Pulsed Laser Technology, Electronic Engineering Institute, Hefei 230037, China
2.
State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

Foundation of State Key laboratory of Pulsed Laser Technology SKL2015KF08

National Natural Science Foundation of China 61675200

Youth Innovation Promotion Association CAS, Youth and Middle-aged Science and Technology Innovation Leader and Team Project in Jilin Province 20170519012JH

More Information

Corresponding author: PAN Qi-kun, E-mail:panqikun2005@163.com
Received Date: 11 Jun 2018
Rev Recd Date: 13 Jul 2018
Publish Date: 01 Apr 2019

Abstract

Abstract

A rapid tuning pulsed CO₂ laser is presented using a blazed grating system and a pair of acousto-optic modulators. Firstly, the characteristics of acousto-optic modulators were studied through experimentation. The results showed that the deflection angle of the acousto-optic modulator was approximately 4.4°, which was in agreement with the calculations of the Bragg equation. When a single laser passed the acousto-optic modulator, the shift in frequency was approximately 40.68 MHz, which was in agreement with the acousto-optic driving frequency. In addition, when multiple lasers passed through the acousto-optic modulator, the shift in frequency was compounded. Based on the acousto-optic modulator results, experimental research was performed on rapid tuning pulsed CO₂ lasers. In order to offset the shift in acousto-optic frequency, two acousto-optic modulators were placed symmetrically in the deflected optical beam, and a laser output was obtained. Using a blazed grating, a full band tunable output laser was obtained in the linear optical beam. Finally, under sequential control of double acousto-optic modulators, a double wavelength laser with rapid tuning output and a common optical axis was obtained. The tuning time of the pulsed laser was approximately 1 ms, which pulsed at a width of less than 300 ns. The tuning speed of the pulsed laser was independent of the transition band of the CO₂ laser.
- CO₂ laser,
- rapidly tunable,
- acousto-optic modulator,
- grating

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References(16)

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