Actively Q-switched and mode-locked diode-pumped Nd : GdVO(4)-KTP laser

作者：Li Ming^*; Zhao Shengzhi; Yang Kejian; Li Guiqiu; Li Dechun; Wang Jing; An Jing; Qiao Wenchao

来源：IEEE Journal of Quantum Electronics, 2008, 44(3-4): 288-293.

DOI：10.1109/JQE.2007.912466

• actively Q-switched
• mode-locking
• Nd : GdVO(4)
• crystal

By using a comparative simple configuration and a short cavity length, a diode-pumped actively Q-switched and mode-locked intracavity frequency doubled Nd:GdVO(4)-KTP green laser with the modulation depth 100% was realized, from which the great average output power, the high efficiency were obtained and the mode-locked pulse inside the Q-switched pulse has a repetition rate of 476 MHz. Using the hyperbolic secant function methods and by considering the Gaussian distribution of the intracavity photon density, the influences of continuous pump rate, the upper state lifetime of the active medium and the turnoff time of the acousto-optic Q-switch, we proposed a developed rate equation model for actively Q-switched and mode-locked green lasers. With this developed model, the theoretical calculations are in good agreement with the experimental results and the width of the mode-locked green pulse is estimated-to be about 185 ps.

• 出版日期2008-4
• 单位山东大学