Compact optical delay line for long-range scanning

被引：2

作者：

Kao, Chia-Yun ^{[1
]}

Chang, Chun-Wei ^{[1
]}

Locharoenrat, Kitsakorn ^{[1
]}

Chang, Chao-Ming ^{[2
]}

Hou, Max Ti-Kuang ^{[3
]}

Hsu, I-Jen ^{[1
]}

机构：

[1] Chung Yuan Christian Univ, Dept Phys, Chungli 32023, Taiwan

[2] Natl Tsing Hua Univ, Inst Microelectromech Syst, Hsinchu 30043, Taiwan

[3] Natl United Univ, Dept Mech Engn, Miaoli 36003, Taiwan

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 19期

关键词：

Rapid-scanning optical delay line; Low-coherence reflectometer; Biomedical imaging; Time-domain approach; Interference; ROTARY MIRROR ARRAY; COHERENCE TOMOGRAPHY; POLYGON MIRROR; INTERFEROMETRY;

D O I：

10.1016/j.optcom.2011.05.021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We proposed and demonstrated an optical delay line composed of all reflective components for long-range scanning without walk-off problem. The optical delay line consists of a retro-reflector, an inclined reflection mirror and a scanning mirror. The size of the optical delay line is within 2 cm x 2 cm and the scanning range can reach 2.9 mm when the beam is incident at the pivot of the scanning mirror and the vibration angle of the scanning mirror is 9.6 degrees. The scanning range can be further increased when the pivot of the scanning mirror is laterally deviated from the incident beam. The optical delay line possesses the advantages that it is compact, easy to fabricate and can perform rapid scanning in large scanning range without walk-off problem. The optical delay line was demonstrated with a low-coherence reflectometer where the scanning rate was 400 Hz. A higher scanning rate can be achieved when a scanning component with higher scanning rate is applied. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4243 / 4247

页数：5

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