Separation of radiation and absorption losses in two-dimensional photonic crystal single defect cavities

被引：17
作者：
Alvarado-Rodriguez, I [1 ]
Yablonovitch, E [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2002年 / 92卷 / 11期
关键词：
D O I：
10.1063/1.1516835
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have characterized the optical modes present in a two-dimensional photonic crystal single defect cavity fabricated in an InP/In0.53Ga0.47As/InP double heterostructure thin film on a glass slide. The cavity resonance was tuned to different frequencies in the 1.55 mum spectral region. Radiation losses and material absorption influence the measured value of cavity quality factor Q. We separated these two loss mechanisms by performing a curve fit of the loss rate 1/Q versus the wavelength-dependent absorption coefficient of In0.53Ga0.47As. By extrapolating this curve to zero absorption, the radiation loss rate 1/Q(rad) is obtained. (C) 2002 American Institute of Physics.
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收藏
页码：6399 / 6402
页数：4
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