Coupling‐loss‐arrested misaligned semiconductor laser arrays
作者:
Zheng Wang,
Guotong Du,
Dingsan Gao,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 68,
issue 7
页码: 3756-3758
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.346294
出版商: AIP
数据来源: AIP
摘要:
Coupling‐loss‐arrested misaligned semiconductor laser arrays are designed and fabricated by liquid‐phase epitaxy. In these devices, the losses in the normal misaligned arrays is collected by a gain‐induced positive waveguide, and then the collected light couples with light in the adjacent waveguides evanescently, therefore avoiding the coupling loss and strengthening the coupling. The constructed co‐cavity element should have better characteristics with respect to transverse‐mode selection. A clean single‐lobe far field as narrow as 3° and a relatively low threshold of 130 mA for a seven‐element array are obtained.
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