High-pulse-energy mode-locked picosecond oscillator

Yang Chao; Meng Chen; Gang Li

doi:10.1117/12.2036065

28 February 2014 High-pulse-energy mode-locked picosecond oscillator

Yang Chao, Meng Chen, Gang Li

Proceedings Volume 8959, Solid State Lasers XXIII: Technology and Devices; 89590Y (2014) https://doi.org/10.1117/12.2036065
Event: SPIE LASE, 2014, San Francisco, California, United States

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.

Citation Download Citation

Yang Chao, Meng Chen, and Gang Li "High-pulse-energy mode-locked picosecond oscillator", Proc. SPIE 8959, Solid State Lasers XXIII: Technology and Devices, 89590Y (28 February 2014); https://doi.org/10.1117/12.2036065

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