서지주요정보
CPA Nd:glass 레이저 시스템에서의 증폭 특성 및 펄스 압축에 관한 연구 = Investigation on the amplification characteristics and the pulse compression in a CPA Nd:glass laser system
서명 / 저자 CPA Nd:glass 레이저 시스템에서의 증폭 특성 및 펄스 압축에 관한 연구 = Investigation on the amplification characteristics and the pulse compression in a CPA Nd:glass laser system / 제지홍.
저자명 제지홍 ; Jeh, Ji-Hong
발행사항 [대전 : 한국과학기술원, 1999].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8010369

소장위치/청구기호

학술문화관(문화관) 보존서고

MPH 99030

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The method of chirped pulse amplification(CPA) has made possible a high-peak power laser over 1 terawatt(TW) in a university lab. The CPA Nd:glass laser system is composed of a additive pulse mode-locked Nd:YLF laser, a four-pass grating stretcher, a ring regenerative Nd:glass amplifier and two Nd:phosphate glass rod amplifiers and a compressor with two gratings. The Nd:YLF laser oscillator generates mode-locked pulse of 2 ps. The pulse from Nd:YLF laser is stretched to almost 230 ps by a four-pass grating stretcher. The output pulse from a stretcher was amplified in a ring regenerative amplifier, two Nd:glass amplifiers of diameter's 8 mm and 20 mm. In a single pass scheme, the maximum energy from the 20 mm Nd:glass amplifier was 1.2 J at 4.5 kJ pumping energy and the maximum energy in a double pass scheme was 2.5 J at 2.8 kJ pumping energy. The measured energy in a double pass scheme was larger than that in a single pass scheme, but spatial beam profile in a single pass scheme was more uniform than that in a double pass scheme. The spectral and temporal profiles of an amplified pulse were measured. The central wavelength of an Nd:YLF laser oscillator (1053nm) is not identical with that of an Nd:phosphate glass amplifier(1054nm). As a result, the measured spectral profile of the amplified pulse was different from that of an Nd:YLF laser oscillator. The spectrum of an oscillator pulse became broader and the central position of the spectrum shifted to the 1054nm during amplification. The pulse compressor consists of two 1200gr/mm gratings and is double-parallel with a distance of 13.8m. The duration of compressed pulse is measured by a single-shot autocorrelator. The single-shot autocorrelator utilizes KTP as a second-harmonic generation element and a charge-coupled device as a detector. The measured pulse duration was shorter than that of the Nd:YLF oscillator. A further optimization of the CPA Nd:glass laser system will be pursued to achieve an output over 1 TW.

서지기타정보

서지기타정보
청구기호 {MPH 99030
형태사항 [iv], 70 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ji-Hong Jeh
지도교수의 한글표기 : 남창희
지도교수의 영문표기 : Chang-Hee Nam
학위논문 학위논문(석사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 69-70
주제 극초단 고출력 레이저
회절격자
펄스 압축
자체상관계
이차 조화파 발생
Ultra high peak power laser
Grating
Pulse compression
Autocorrelator
Second harmonic generation
QR CODE qr code