Far-field emission narrowing effect of microdisk lasers
作者:
T.-D. Lee,
P.-H. Cheng,
J.-S. Pan,
R.-S. Tsai,
Y. Lai,
K. Tai,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 18
页码: 2223-2225
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.121328
出版商: AIP
数据来源: AIP
摘要:
Far-field intensity distribution of semiconductor microdisk lasers is experimentally measured and the emission angle is found to be much smaller than that of a planar source with the same near-field width. In fact the emission angle is determined mainly by the disk radius instead of the disk thickness. A scalar diffraction theory in the cylindrical coordinate is developed to explain such an emission-angle-narrowing phenomenon and numerical calculation based on a vectorial diffraction theory is carried out to explain the measured polarization state. ©1998 American Institute of Physics.
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