Efficient, kHz repetition rate, gain-switched Cr:forsterite laser |
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| Authors: | J.C. Diettrich I.T. McKinnie D.M. Warrington |
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| Affiliation: | (1) Department of Physics, University of Otago, P.O. Box 56, Dunedin, New Zealand (Fax: +64-3/479-0964, E-mail: mckinnie@physics.otago.ac.nz), NZ |
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| Abstract: | We have developed a gain-switched room-temperature Cr:forsterite laser operating at repetition rates of between 1 and 34 kHz, and pumped by a continuous wave, Q-switched Nd:YAG laser. With optimised output coupling, an output pulse energy of 52 μJ was measured at 1.5 kHz repetition rate, corresponding to 11% efficiency and 13% slope efficiency. Threshold pulse energy was 53 μJ. Output power of 370 mW was obtained at 10 kHz repetition rate and 4.4 W pump power. Water cooling was not required for repetition rates up to 10 kHz. In a tunable, folded resonator, the Cr:forsterite wavelength tuned between 1173 and 1338 nm. This laser operated with maximum pulse energy of 34 μJ, efficiency of 13%, and power of 307 mW. The laser output was close to diffraction-limited with M2 of 1.2. Received: 6 January 1999 / Published online: 29 July 1999 |
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| Keywords: | PACS: 42.55.-f 42.55.Rz 42.72.Ai |
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