Feedback light coherence issues in micro optical pick-ups

被引：1

作者：

Bell, BW ^{[1
]}

Wilson, SD ^{[1
]}

机构：

[1] DPHI Inc DataPlay, Boulder, CO 80301 USA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2005年 / 44卷 / 5B期

关键词：

laser feedback; coherence function; micro optical pick-up; optical path length; visibility function; laser feedback noise;

D O I：

10.1143/JJAP.44.3388

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The conditions for optimizing laser feedback in small optical pick-ups using 660 nm strained quantum well laser diodes are discussed. Peaks in the coherence function occurring as a periodic function of the feedback path length are found to diminish rapidly once high frequency drive current modulation is applied. However, feedback path lengths less than 25 mm still show large values. This coherent feedback makes the laser sensitive to variations in the phase of the feedback light. The choice of the feedback path length is critical to eliminating these effects.

引用

页码：3388 / 3392

页数：5