Properties of fluoride microresonators for mid-IR applications

被引：13
作者：
Grudinin, Ivan S. [1 ]
Mansour, Kamjou [1 ]
Yu, Nan [1 ]
机构：
[1] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
来源：
OPTICS LETTERS | 2016年 / 41卷 / 10期
关键词：
MULTIPHONON INFRARED-ABSORPTION; FREQUENCY COMB GENERATION; RESONATORS; SCATTERING; WATER; CAF2;
D O I：
10.1364/OL.41.002378
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study crystalline fluoride microresonators for mid-infrared (mid-IR) applications. Whispering gallery mode resonators were fabricated with BaF2, CaF2, and MgF2 crystals. The quality factors were measured at wavelengths of 1.56 and 4.58 mu m. The impacts of post-fabrication processing, impurities, and surface water are highlighted. The mid-IR optical losses due to multiphoton absorption are measured. It is found that MgF2 resonators have a room temperature Q-factor of 8.3 x 10(6) at a wavelength of 4.58 mu m, limited by multiphoton absorption. (C) 2016 Optical Society of America
引用
收藏
页码：2378 / 2381
页数：4
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