Stability of the single-mode output of a laser diode array with phase conjugate feedback

被引:15
作者
Jensen, SJ [1 ]
Lobel, M [1 ]
Petersen, PM [1 ]
机构
[1] Riso Natl Lab, Opt & Fluid Dynam Dept, DK-4000 Roskilde, Denmark
关键词
D O I
10.1063/1.125810
中图分类号
O59 [应用物理学];
学科分类号
摘要
The stability of the output of a single-mode laser diode array with frequency selective phase conjugate feedback has been investigated experimentally. Both the long-term stability of the laser output and the sensitivity to feedback generated by external reflection of the output beam are examined. The output power and the center wavelength are found to be extremely stable in a 100 h stability measurement. External feedback of the output beam into the laser is seen to decrease both the spatial and the temporal coherence of the output significantly. We outline an approach to obtain a stable single-mode output when external feedback is present using spatial filtering in the path of the output beam. (C) 2000 American Institute of Physics. [S0003-6951(00)04505-8].
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页码:535 / 537
页数:3
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