Photonic crystal heteroslab-edge microcavity with high quality factor surface mode for index sensing

被引：18
|
作者：
Lu, Tsan-Wen [1 ]
Hsiao, Yi-Hua
Ho, Wei-De
Lee, Po-Tsung
机构：
[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 300, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 14期
关键词：
measurement by laser beam; microcavity lasers; microsensors; optical design techniques; optical sensors; photonic crystals; Q-factor; refractive index measurement; refractometers; CAVITY;
D O I：
10.1063/1.3117225
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this report, we propose a photonic crystal heteroslab-edge microcavity design for optical index sensing, where the high quality (Q) surface mode is confined by mode-gap effect. By optimizing the barrier region of the microcavity, high Q factor of 6.6x10(5) is obtained in simulations. Lasing actions with high Q factor and low threshold of 6400 and 0.55 mW are obtained from the real devices. High index sensing response and small detectable index variation of 625 nm per refractive index unit and 3.6x10(-6) are obtained in simulations.
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页数：3
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