Spatially variable retardation plate for beam brightness enhancement in a high-power laser

被引：8

作者：

Machavariani, G. ^{[1
]}

Jackel, S. ^{[1
]}

Lumer, Y. ^{[1
]}

Moshe, I. ^{[1
]}

Meir, A. ^{[1
]}

机构：

[1] Soreq Nucl Res Ctr, Elect Opt Div, IL-81800 Yavne, Israel

来源：

OPTICS LETTERS | 2007年 / 32卷 / 17期

关键词：

D O I：

10.1364/OL.32.002626

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple and robust method for brightness enhancement, efficiently transforming a radially polarized LG (0, 1)* mode into a nearly Gaussian beam of much higher quality. We use for this a spatially variable retardation plate and a spatial filter. The analysis shows that the transformation yields an increase in brightness by a factor of 3.4. In the experiment, we transformed a high-power Nd:YAG radially polarized (0, 1)* LG beam with power of 70 W and M-2 = 2.6 into a nearly Gaussian beam with M-2 = 1.36. This resulted in brightness enhancement by a factor of 2.6. (c) 2007 Optical Society of America.

引用

页码：2626 / 2628

页数：3

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