文档介绍：
Micro-cavity lasers with directional emission and its
parison#
Yan Changling, Shi Jianwei, Li Peng*
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(Changchun University of Science and Technology, State Key Lab on High Power Seimconductor
lasers, ChangChun 130022)
Abstract: We demonstrated Limaçon-shaped micro-cavity lasers with directional emission. In
experiment, this kind of micro-cavity laser was fabricated with the deformed factor at ,
characterized pared with the traditional F-P cavity ridge laser prepared with the same material
at a wavelength of about 10um. From the experimental results, the micro-cavity laser showed an highly
directional emission (about 9mW in output peak power) with parallel directional divergence angle of
30° and perpendicular divergence angle of 67° at full width of half maximum, which is similar to that
of the ridge laser. The threshold current density of the micro-cavity laser was about 40% lower than
that of the ridge laser, and the quality factor was estimated up to 1140.
Keywords: Micro-cavity lasers; directional emission; far-field divergence angle
0 Introduction
Micro-cavity lasers have attracted lots of intense attention due to their low threshold, high
quality factor Q and being suitable not only for high density optoelectronic integration
applications, but also for fundamental studies such as cavity quantum electrodynamics and
non