Optical frequency domain angle measurement in a femtosecond laser autocollimator

被引：56
|
作者：
Chen, Yuan-Liu [1 ]
Shimizu, Yuki [1 ]
Tamada, Jun [1 ]
Kudo, Yukitoshi [1 ]
Madokoro, Shuhei [1 ]
Nakamura, Kazuki [1 ]
Gao, Wei [1 ]
机构：
[1] Tohoku Univ, Dept Finemech, Aoba Ku, 6-6-01 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 14期
基金：
日本学术振兴会;
关键词：
MODE-LOCKED LASER; COMB; MOTIONS; ETALON; STAGE;
D O I：
10.1364/OE.25.016725
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A mode-locked laser autocollimator, in which a group of first-order diffracted beams from a grating reflector are detected by an autocollimation unit, has an expanded angle measurement range compared with a conventional autocollimator using a single-wavelength laser source. In this paper, a new optical frequency domain angle measurement method is proposed to increase the visibility of output signal of the mode-locked femtosecond laser autocollimator, which is limited by the overlap of the focused diffracted light spots. The output visibility of a prototype femtosecond laser autocollimator has been increased by the proposed method to approximately 100% over a large range of 21600 arc-seconds. (C) 2017 Optical Society of America
引用
收藏
页码：16725 / 16738
页数：14
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