Investigation of the Beam Quality of a Compact Non-Chain Pulsed DF Laser with a Confocal Positive Branch Unstable Resonator

被引：1

作者：

Zhang, Laiming ^{[1
]}

Ruan, Peng ^{[2
]}

Chen, Fei ^{[1
]}

Shao, Chunlei ^{[1
]}

Pan, Qikun ^{[1
]}

Guo, Jin ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Laser Interact Matter, Changchun 130033, Peoples R China

[2] Jilin Normal Univ, Coll Informat Technol, Jilin Engn Res Ctr Optoelect Mat & Devices, Siping 136000, Peoples R China

来源：

APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 05期

基金：

国家重点研发计划;

关键词：

DF lasers; positive branch unstable resonator; divergence angle; diffraction limit magnification; ABSORPTION; DISCHARGE;

D O I：

10.3390/app13053229

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The results of detailed studies on the beam quality of a non-chain pulsed electric discharged DF laser based on a compact inner cavity confocal positive branch unstable resonator were presented herein. The theoretical and experimental divergence angles for magnification M = 1.65, 1.85, 2.05, and 2.25 were calculated according to Fraunhofer diffraction and measured by the method of calibrated apertures. The smallest divergence of theta = 0.66 mrad was obtained with M = 2.25 in our experiment, which is 1.95 times the theoretical value. The corresponding far-field energy density at 10 km distance from the laser exit was 82.8 mJ/m(2). The beam quality and energy density were increased by 11 and 91 times, respectively, compared with a similar stable resonator in our lab.

引用

页数：11

共 28 条

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