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http://dx.doi.org/10.3807/KJOP.2002.13.4.336

Lock-in frequency improvement of ring laser gyro using a low - scattering mirror  

Jo, Min-Sik (Technology Research Center, Agency for Defense Development)
Shim, Kyu-Min (Technology Research Center, Agency for Defense Development)
Kwon, Yong-Yool (Technology Research Center, Agency for Defense Development)
Chung, Tae-Ho (Technology Research Center, Agency for Defense Development)
Oh, Moon-Su (Technology Research Center, Agency for Defense Development)
Lee, Soo-Sang (Center for photonics & Communications, Institute for Advanced Engineering)
Cho, Hyun-Ju (Center for photonics & Communications, Institute for Advanced Engineering)
Son, Seong-Hyun (Center for photonics & Communications, Institute for Advanced Engineering)
Moon, Gun (Center for photonics & Communications, Institute for Advanced Engineering)
Lee, Jae-Chul (Center for photonics & Communications, Institute for Advanced Engineering)
Publication Information
Korean Journal of Optics and Photonics / v.13, no.4, 2002 , pp. 336-339 More about this Journal
Abstract
For the improvement of the lock-in frequency of a ring laser gyro, a low-scattering mirror was employed in the laser resonator. A super-polishing technique produced fine mirror substrates of less than 1-A-rms-roughness. The mirror coating using an ionbeam sputtering technique reduced the scattering loss to less than 30 ppm. As a result of the mirror scattering enhancement of the ring laser, the lock-in frequency of the gyro was improved up to about 0.1 deg/sec.
Keywords
ring laser gyroscope; low scattering mirror; lock-in-frequency;
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