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Proceedings Paper

High-pulse-energy mode-locked picosecond oscillator
Author(s): Yang Chao; Meng Chen; Gang Li
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Paper Abstract

We report on a high-pulse-energy solid-state picosecond Nd:YVO4 oscillator with cavity-dumping. The laser is end-pumped by an 808 nm laser diode and passively mode-locked with a semiconductor saturable absorption mirror (SESAM). In pure cw-mode-locking, this laser produced 2.5 W of average power at a pulse repetition rate of 40 MHz and pulse duration around 12 ps. A cavity dumping technique using an intra-cavity BBO electro-optic crystal to which bidirectional voltage was applied was adopted, effectively improving the cavity-dumping rate. Tunable high repetition rate from 100 kHz to 1 MHz was achieved. With electro-optic cavity dumper working at 1 MHz repetition rate, we achieved average power 594 mW. The laser includes a 5 mm long, a-cut, 0.5% doped Nd:YVO4 crystal with a 5-degree angle at one end face. Laser radiation is coupled out from the crystal end face with a 5-degree angle, without requiring insertion of a thin-film polarizer (TFP), thus simplifying the laser structure. This picosecond laser system has the advantages of compact structure and high stability, providing a good oscillator for regenerative amplifiers.

Paper Details

Date Published: 28 February 2014
PDF: 6 pages
Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 89590Y (28 February 2014); doi: 10.1117/12.2036065
Show Author Affiliations
Yang Chao, Beijing Univ. of Technology (China)
Meng Chen, Beijing Univ. of Technology (China)
Gang Li, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 8959:
Solid State Lasers XXIII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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