Properties of a thermal lens in laser ceramics

被引：27
|
作者：
Snetkov, I. L. [1 ]
Mukhin, I. B. [1 ]
Palashov, O. V. [1 ]
Khazanov, E. A. [1 ]
机构：
[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia
来源：
QUANTUM ELECTRONICS | 2007年 / 37卷 / 07期
关键词：
polycrystalline ceramics; thermal effects; thermal lens; beam-qualitly parameters;
D O I：
10.1070/QE2007v037n07ABEH013477
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A model of thermal optical effects in laser ceramics was constructed, which takes into account random orientations of crystallographic axes in ceramics grains. Analytic expressions for the thermally induced phase, its average value and dispersion were derived. The effect of the beam-phase modulation with the characteristic transverse size of the order of the grain size was predicted. It was shown that deterioration of the parameters of the beam quality caused by this effect is inversely proportional to the ratio of the length of the ceramic element to the grain size.
引用
收藏
页码：633 / 638
页数：6
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