Small Gaussian laser beam diameter measurement using a quadrant photodiode

被引：12
|
作者：
Ng, T. W.
Tan, H. Y.
Foo, S. L.
机构：
[1] Natl Univ Singapore, Fac Engn, Singapore 117576, Singapore
[2] Seagate Technol Int, Singapore 569877, Singapore
来源：
OPTICS AND LASER TECHNOLOGY | 2007年 / 39卷 / 05期
关键词：
Gaussian beam measurement; quadrant photodiode;
D O I：
10.1016/j.optlastec.2006.06.001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method that uses the quadrant photodiode has been shown to be relatively inexpensive and robust in measuring Gaussian laser beam diameters in two axes. This approach requires neither component rotation nor precision alignment, and it facilitates integration of Gaussian laser beam diameter measurement with laser beam tracking in instruments. The physical gap between sensors in the quadrant photodiode, however, limits laser beam diameter measurements to those in the millimeter range. Here, we describe a modified approach to measure Gaussian laser beam diameters that are significantly smaller. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1098 / 1100
页数：3
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