Title :
Self-correction of air-refractive index with extreme accuracy using frequency combs
Author :
Minoshima, K. ; Wu, Guangfu ; Takahashi, Masaharu ; Inaba, Hiromi
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
fDate :
June 30 2013-July 4 2013
Abstract :
Heterodyne interferometry of 61-m path-length based on two-color optical frequency combs is developed for air-refractive-index correction. Measured two-color optical-path-differences agreed with calculations with 10-11 for 10 hour. Corrected distance variation agreed with thermal expansion of base-plate.
Keywords :
colour; light interferometry; refractive index; thermal expansion; air-refractive index self-correction; base-plate; heterodyne interferometry; size 61 m; thermal expansion; time 10 h; two-color optical frequency combs; two-color optical-path-differences; Adaptive optics; Optical interferometry; Optical mixing; Optical refraction; Optical variables control; Optical variables measurement; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
DOI :
10.1109/CLEOPR.2013.6600038
