M-2 of MOPA CuBr laser radiation

Astadjov  D; Stoychev  L; Sabotinov  N

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M-2 of MOPA CuBr laser radiation

机译：M-2 of MOPA CuBr laser radiation

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摘要

The beam propagation factor, M-2 of the master-oscillator power-amplifier (MOPA) CuBr laser emission compliant with ISO 11146 is studied methodically. Statistical parameters of 2D intensity profile of the near and far fields of MOPA laser radiation are measured by a beam analyzing technique as functions of timing delay between MO and PA. For first time the influence of the gas buffer (causing the radiation profile to change from annular to top-hat and Gaussian-like) and light polarization on CuBr laser beam focusability (M-2) was under investigation. The MOPA gain curve is found and the influence of gain on the input signal (from MO into PA) due to the absorption/amplification in PA on the field profiles is shown. For annular radiation M-2 range is from 13-14 (small delays) to 5-6 (large delays) and for filled-center radiation M-2 is 6-7 (small delays) and at the end of gain curve is as much as 4. With polarized light, M-2 drops to 3 at the end of gain curve. The brightness of laser emission with hydrogen goes up 3-5 times and the linearly-polarized beam is at least 40% brighter than that of partial or non-polarized beams.

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来源
《Optical and Quantum Electronics》 |2007年第7期|603-610|共8页
作者
Astadjov D; Stoychev L; Sabotinov N;
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作者单位

Bulgarian Acad Sci, Georgi Nadjakov Inst Solid State Phys, BU-1784 Sofia, Bulgaria;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
copper vapor laser; laser radiation profile; M(2)supercript stop; MOPA laser system; MASTER-OSCILLATOR; BEAM-QUALITY; UNSTABLE RESONATORS; AMPLIFIER; POWER; SYSTEM;

M-2 of MOPA CuBr laser radiation

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