Characterization of a Passive Mode Locked Ti-sapphire Laser With a Strained Quantum Well Saturable Bragg Reflector

• Main Authors: Jer-tsong Chen, 陳哲聰
• Other Authors: Ci-Ling Pan
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/94883796944327979925

碩士 === 國立交通大學 === 光電工程所 === 88 === Abstract We demonstrate mode-locking of femtosecond Ti-sapphire laser with a strained quantum well saturable Bragg reflector (SSBR). Two strained quantum wells were used as the absorbing layer. Self starting 110fs pulse tunable from 780 to 815nm were generated in a X-folded cavity with an average output power of 800mW at a pulse repetition rate of 93MHz.We have achieved a mode locking build up time only 20us, using the SSBR to initiate the pulse formation. By time gated system, we found that the mode locked spectrum grow up faster than CW spectrum when the buildup time is shorter than 40us. When the buildup time is larger than 40us, the CW spectrum grow up faster than mode locked spectrum.