The fabrication of very-small-aperture lasers is demonstrated, and their performance is analyzed. Because of strong optical feedback caused by a gold film on the front facet of the laser, its behavior changes: The threshold current decreases, the density of light inside the laser diode and the redshift effect of the spectra are enhanced, and the laser diode's lifetime is shorter than that of common laser diodes with large driving current.
© 2005 Optical Society of America
(050.1220) Diffraction and gratings : Apertures
(110.0180) Imaging systems : Microscopy
(120.7000) Instrumentation, measurement, and metrology : Transmission
(350.3950) Other areas of optics : Micro-optics
Qiaoqiang Gan, Guofeng Song, Yun Xu, Jianxia Gao, Qing Cao, Xuejian Pan, Yuan Zhong, Guohua Yang, Xiaopeng Zhu, and Lianghui Chen, "Performance analysis of very-small-aperture lasers," Opt. Lett. 30, 1470-1472 (2005)