Self-mixing type of phase-locked laser diode interferometer

被引：41

作者：

Suzuki, T ^{[1
]}

Hirabayashi, S ^{[1
]}

Sasaki, O ^{[1
]}

Maruyama, T ^{[1
]}

机构：

[1] Niigata Univ, Fac Engn, Niigata 9502181, Japan

来源：

OPTICAL ENGINEERING | 1999年 / 38卷 / 03期

关键词：

optical feedback; self-mixing; laser diode; phase lock; range finder; displacement measurement;

D O I：

10.1117/1.602132

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new type of phase-locked laser diode interferometer that uses self-mixing interference in the optical system is described. The self-mixing interference (SMI) signal is obtained easily by optical feedback, i.e., feeding back the laser beam from the object to the laser diode (LD). The SMI signal can be detected by a photodiode in the package of the LD. Therefore, a beamsplitter, reference mirror, and external photodetector are not required, and an interference signal is obtained using a simple optical system. Although the mechanism of SMI is completely different from that of conventional interference, it is shown that the response of the SMI signal to phase changes is the same as that of conventional interference, We used the phase-locked technique to fix the phase change and demonstrated measurement of absolute distance and displacement, (C) 1999 Society of Photo-Optical instrumentation Engineers. [S0091-3286(99)01503-2].

引用

页码：543 / 548

页数：6

共 27 条

[1] LINE NARROWING IN A SINGLE-MODE INJECTION-LASER DUE TO EXTERNAL OPTICAL FEEDBACK [J].