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Picosecond laser system based on microchip oscillator

A. STRATAN1, L. RUSEN1,* , R. DABU1, C. FENIC1, C. BLANARU1

Affiliation

  1. Department of Lasers, National Institute for Laser, Plasma, and Radiation Physics, 409 Atomistilor St., PO Box MG-36, 077125 Bucharest, Romania

Abstract

We have developed a high-energy, compact, picosecond laser consisting of a diode-pumped, passively Q-switched microchip laser, and a flash-pumped two-pass Nd:YAG amplifier. Amplified pulses of maximum 19-mJ energy, 460-ps duration at (1-10) Hz rate, in a nearly TEM00 transversal mode at 1064-nm wavelength, were obtained. The infrared pulses were nonlinearly converted to 532-nm second harmonic and 266-nm fourth harmonic with a conversion efficiency of 50 % and 20 %, respectively.

Keywords

Picosecond pulses, Microchip laser, Flash-pumped amplifier, Second harmonic, Fourth harmonic.

Submitted at: Aug. 2, 2008
Accepted at: Nov. 11, 2008

Citation

A. STRATAN, L. RUSEN, R. DABU, C. FENIC, C. BLANARU, Picosecond laser system based on microchip oscillator, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 11, pp. 3022-3028 (2008)