Title :
Prototype of a large ring laser for geoscientific applications
Author :
Bilger, H.R. ; Stedman, G.E. ; Ziyuan Li ; Schreiber, U. ; Schneider, M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA
fDate :
June 27 1994-July 1 1994
Abstract :
Optical ring cavities to measure rotation in geoscientific applications require quality factors 10/sup 10/10/sup 10/. The line center due to the Sagnac effect of the Earth rotation (about 70 Hz) has at present an error of about 5 /spl mu/Hz, i.e. a relative precision of 1.0/spl times/10/sup -20/ is achieved, using the 633 nm HeNe laser line.<>
Keywords :
Earth rotation; gas lasers; geophysical equipment; laser beam applications; laser cavity resonators; ring lasers; 3.5 m; 633 nm; 70 Hz; Earth rotation; HeNe; HeNe laser; Sagnac effect; geoscientific applications; optical ring cavities; prototype; ring laser; rotation measurement; Application software; Background noise; Earth; Extraterrestrial measurements; Frequency; Laser applications; Prototypes; Q factor; Ring lasers; Sagnac interferometers;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333184
