WHISPERING-GALLERY MODE MICRODISK LASERS
WHISPERING-GALLERY MODE MICRODISK LASERS
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DOI：
10.1063/1.106688
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发表时间：
1992-01-20
影响因子：
4
通讯作者：
LOGAN, RA
中科院分区：
文献类型：
--
作者：
MCCALL, SL;LEVI, AFJ;LOGAN, RA
介绍了一种基于半导体微盘边缘高反射率回音壁模式的新型微激光器设计，并给出了初步的实验结果。 薄盘平面内的光限制导致微谐振器具有用于单模、超低阈值激光器的潜力。 最初的实验在InP/InGaAsP系统中使用选择性蚀刻技术，以实现3-10 μ m直径的磁盘，薄至500埃，悬浮在空气中或InP基座上的SiO2。 光泵浦InGaAs量子威尔斯阱在用液氮冷却时提供足够的增益，以在阈值泵浦功率低于100 μ W的情况下获得1.3和1.5 μ m波长的单模激光。
A new microlaser design based on the high-reflectivity whispering-gallery modes around the edge of a thin semiconductor microdisk is described and initial experimental results are presented. Optical confinement within the thin disk plane results in a microresonator with potential for single-mode, ultralow threshold lasers. Initial experiments use selective etching techniques in the InP/InGaAsP system to achieve 3-10-mu-m diameter disks as thin as 500 angstrom suspended in air or SiO2 on an InP pedestal. Optically pumped InGaAs quantum wells provide sufficient gain when cooled with liquid nitrogen to obtain single-mode lasing at 1.3 and 1.5-mu-m wavelengths with threshold pump powers below 100-mu-W.