Far-field emission narrowing effect of microdisk lasers
Far-field emission narrowing effect of microdisk lasers
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DOI：
10.1063/1.121328
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发表时间：
1998-05-04
影响因子：
4
通讯作者：
Tai, K
中科院分区：
文献类型：
--
作者：
Lee, TD;Cheng, PH;Tai, K
实验测量了半导体微盘激光器的远场强度分布，发现其发射角比同等近持宽度的平面光源小得多。实际上，发射角主要是由圆盘半径而不是圆盘厚度决定的。提出了柱坐标下的标量衍射理论来解释这种发射角变窄现象，并基于矢量衍射理论进行了数值计算来解释测量的偏振态。(C) 1998美国物理研究所。
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-held 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. (C) 1998 American Institute of Physics.