Phase Locking of Laser Diode Array by Using an Off-Axis External Talbot Cavity

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（5）
• 页码范围: 133-135
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/5/054210

摘要

Phase locking of a laser diode array is demonstrated experimentally by using an off-axis external Talbot cavity with a feedback plane mirror.Due to good spatial mode discrimination,the cavity does not need a spatial filter.By employing the cavity,a clear and stable far-field interference pattern can be observed when the driver current is less than 14A.In addition,the spectral line width can be reduced to 0.8nm. The slope efficiency of the phase-locked laser diode array is about 0.62 W/A.