Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Lock-in frequency improvement of ring laser gyro using a low - scattering mirror

저산란 반사경을 이용한 링레이저 자이로의 주파수 잠긴 개선

  • 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)
  • 조민식 (국방과학연구소 기술연구본부) ;
  • 심규민 (국방과학연구소 기술연구본부) ;
  • 권용율 (국방과학연구소 기술연구본부) ;
  • 정태호 (국방과학연구소 기술연구본부) ;
  • 오문수 (국방과학연구소 기술연구본부) ;
  • 이수상 (고등기술연구원 포토닉스 및 통신기술센터) ;
  • 조현주 (고등기술연구원 포토닉스 및 통신기술센터) ;
  • 손승현 (고등기술연구원 포토닉스 및 통신기술센터) ;
  • 문건 (고등기술연구원 포토닉스 및 통신기술센터) ;
  • 이재철 (고등기술연구원 포토닉스 및 통신기술센터)
  • Published : 2002.08.01
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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.

링레이저 자이로의 주파수 잠김을 개선하기 위하여, 링레이저 공진기에 저산란 반사경을 적용하는 연구가 수행되었다. 초정밀 연마기술을 통해 표면 거칠기 1Å rms 이하의 반사경 기판을 가공하였으며, 가공된 기판에 이온빔 스퍼터링 코팅방식을 이용하여 산란율 300ppm 이하의 반사경을 제작하였다. 제작된 저산란 반사경을 링레이저 자이로에 적용한 결과, 자이로의 잠김 주파수를 약 0.1 deg/sec 이하로 개선할 수 있었다.

Keywords

References

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