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

doi:10.1088/0256-307X/29/5/054210

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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 14 A. In addition, the spectral line width can be reduced to 0.8 nm. The slope efficiency of the phase-locked laser diode array is about 0.62 W/A.

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	SU Zhou-Ping**
	JI Zhi-Cheng
	ZHU Zhuo-Wei
	QUE Li-Zhi
	ZHU Yun

Abstract：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 14 A. In addition, the spectral line width can be reduced to 0.8 nm. The slope efficiency of the phase-locked laser diode array is about 0.62 W/A.

Key words： 42.55.Px 42.60.Da 42.60.Jf

收稿日期: 2011-12-21 出版日期: 2012-04-30

:	42.55.Px	(Semiconductor lasers; laser diodes)
	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.60.Jf	(Beam characteristics: profile, intensity, and power; spatial pattern formation)

引用本文:

SU Zhou-Ping**,JI Zhi-Cheng,ZHU Zhuo-Wei,QUE Li-Zhi,ZHU Yun. Phase Locking of Laser Diode Array by Using an Off-Axis External Talbot Cavity[J]. 中国物理快报, 2012, 29(5): 54210-054210.
SU Zhou-Ping**,JI Zhi-Cheng,ZHU Zhuo-Wei,QUE Li-Zhi,ZHU Yun. Phase Locking of Laser Diode Array by Using an Off-Axis External Talbot Cavity. Chin. Phys. Lett., 2012, 29(5): 54210-054210.

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https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/29/5/054210 或 https://cpl.iphy.ac.cn/CN/Y2012/V29/I5/54210

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