서지주요정보
고분해능 분광학을 위한 다이오드 레이저의 주파수 안정화 = Frequency stabilization of diode lasers for high resolution spectroscopy
서명 / 저자 고분해능 분광학을 위한 다이오드 레이저의 주파수 안정화 = Frequency stabilization of diode lasers for high resolution spectroscopy / 최용석.
저자명 최용석 ; Choi, Yong-Seok
발행사항 [대전 : 한국과학기술원, 2000].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8010683

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 00033

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

For a tunable diode laser system, Vortex from New focus, used in the present study, the linewidth is less than 300kHz for a sampling time of 50msec and the long term drift is typically of the order of 10GHz per a day. To stabilize the laser system, a servo controlled system has been employed. Rb atom and the nontunable cavity have been used as a reference and the laser diode has been used as a transducer. With a Rb vapor cell and a commercial lock circuit, we lock the laser frequency to one of the crossover signals of Rb atom. The frequency fluctuation is $Δν_rms = 1.18$MHz with a sampling time of 1sec and the lowest value of root Allan variance is $σ_y(t) = 50kHz$ for the integration time of t = 0.2sec. Cause the S/N ratio is only about 10 and the lock circuit was not optimized for the stabilization setup so that the high frequency noise could not be removed. Using the homemade lock circuit and the reference cavity, laser frequency was side locked to the cavity transmission signal. The frequency fluctuation is $Δν_rms = 52.5kHz$ for 20msec and 82.1kHz for 500msec, which is five to seven times narrower than that of free running laser. The calculation of Allan variance shows that the linewidth is narrowest (10kHz ) at short sampling time of t = 50msec and increases with longer sampling times. This is caused by the slow frequency drift of laser.

서지기타정보

서지기타정보
청구기호 {MPH 00033
형태사항 [ii], 50 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : Allan variance code
저자명의 영문표기 : Yong-Seok Choi
지도교수의 한글표기 : 안경원
지도교수의 영문표기 : Kyung-Won An
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 49-50
주제 주파수 안정화
고분해능 분광학
Frequency stabilization
High resolution spectroscopy
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