DocumentCode
3249914
Title
Design of Far-Infrared Interferometer at 10.6μm
Author
Wu Yongqian ; Zhang Yudong ; Wu Fan
Author_Institution
Inst. of Opt. & Electron., Chinese Acad. of Sci., Chengdu, China
fYear
2009
fDate
14-16 Aug. 2009
Firstpage
1
Lastpage
4
Abstract
The design and system performance of an far-infrared interferometer is presented. A CO2 laser is used as a light source operating at a 10.6 mum wavelength. A He-Ne laser is introduced into the interferometer to solve problems concerning with alignment. The instrument is capable of testing rough aspheric surfaces. It can be used to evaluate the refractive index deviation in the infrared materials too. The measuring error (RMS) of the interferometer is less than lambda/200 (lambda = 10.6 mum).
Keywords
carbon compounds; gas lasers; helium; interferometers; neon; submillimetre wave lasers; CO2 laser; He-Ne laser; aspheric surfaces; far-infrared Interferometer; infrared materials; light source; measuring error; refractive index deviation; wavelength 10.6 mum; Instruments; Light sources; Optical interferometry; Optical materials; Refractive index; Rough surfaces; Surface roughness; System performance; Testing; Wavelength measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-4412-0
Type
conf
DOI
10.1109/SOPO.2009.5230069
Filename
5230069
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