서지주요정보
비선형 Loop mirror를 이용한 Nd첨가 광섬유 레이저에서의 수동형 모드 록킹 = Passive mode locking of Nd-doped all fiber optic laser with nonlinear loop mirror
서명 / 저자 비선형 Loop mirror를 이용한 Nd첨가 광섬유 레이저에서의 수동형 모드 록킹 = Passive mode locking of Nd-doped all fiber optic laser with nonlinear loop mirror / 오왕열.
저자명 오왕열 ; Oh, Wang-Yuhl
발행사항 [대전 : 한국과학기술원, 1993].
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소장정보

등록번호

8003542

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 93016

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Passively mode locked pulses are obtained from an optical fiber laser by using a nonlinear loop mirror in the positive group velocity dispersion (+GVD) regime. The laser used in the experiment consists of a Nd-doped fiber as an active medium with a dichroic mirror at one end, and a nonlinear fiber loop mirror at the other end. In the nonlinear fiber loop mirror, two optical pulses propagate in the opposite directions with different peak powers, so that they experience different self phase modulation(SPM) while they propagate in this loop mirror. An efficient pulse shortening is obtained when the two counter-propagating optical pulses interfere with proper phase offset. The phase offset is generated such that the optical signals at the peaks of the pulses interfere constructively while destructive interference occurs at the wings of the pulses. In other words, since the high intensity portion of the pulse will be reflected more efficiently by the nonlinear loop mirror than the low intensity portion, pulse narrowing occurs. The pulse width obtained in this work is less than 4ns with 20 - 50 peak power. The pulse width obtained in this experiment is the detection limited value. We expect that the pulse width may be shorter than we measured in the experiment. The computer simulation results show that the pulse shortening occurs in our system in the +GVD regime. The repeatition rate of the pulse depends on the length of the loop mirror. It is about 641.7kHz in our system.

서지기타정보

서지기타정보
청구기호 {MPH 93016
형태사항 [iii], 79 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Wang-Yuhl Oh
지도교수의 한글표기 : 이해웅
지도교수의 영문표기 : Hai-Woong Lee
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 76-79
주제 Neodymium.
Mode-locked lasers.
Nonlinear optics.
Optical fibers.
네오디뮴. --과학기술용어시소러스
광학 섬유. --과학기술용어시소러스
레이저. --과학기술용어시소러스
비선형 광학. --과학기술용어시소러스
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