, Volume 72, Issue 4, pp 395-397

High-power diode-pumped nonlinear mirror mode-locked Nd:YVO4 laser with periodically-poled KTP

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We demonstrate a high-power nonlinear mirror (NLM) mode-locked Nd:YVO4 laser with a periodically poled KTP (PPKTP). With a 10-mm-long PPKTP crystal, 5.6 W of average power with 20-ps of pulse duration was generated at 18-W of pump power. Compared with conventional type-II KTP crystal with the same length, the stability against the Q-switched mode-locking (QML) is significantly increased with PPKTP in NLM laser; and the pulse duration was also considerably reduced.

Received: 21 July 2000 / Revised version: 30 August 2000 / Published online: 10 January 2001