Self Q-Switching in Diode-Pumped Nd :YVO4 Lasers

• Main Author: 葉宗哲
• Other Authors: 吳小華
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/66544082762962855043

碩士 === 東海大學 === 物理學系 === 91 === The paper examines phenomenon of self-induced great pulse that occur in a plano-concave resonator of diode-pumped Nd:YVO4 without any optical item. Occurring self-Q-switched has two reservations. The resonator length should be crossed through half-spherical length, and output coupling should misalign the optical axis. Some parameters such as SQS second threshold, pulse width, and average power are measured in relation to the pump power, radius of curvature of output coupler.　Until now, We get the lowest pulse width 2.75ns by using a 1cm and 98% reflectivity of output coupler. The pulse second threshold is 291mW and repetition rate is 25.1kHz ,and the peak power is 14000 times larger than average output power.