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Compact Nd:YVO4 lasers with pulse repetition rates up to 160 GHz

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6 Author(s)
Krainer, L. ; Inst. of Quantum Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland ; Paschotta, R. ; Lecomte, S. ; Moser, Michael
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We present a comprehensive study on multigigahertz repetition rate Nd:YVO4 lasers, passively mode-locked with semiconductor saturable absorber mirrors. A brief review of Q-switching instabilities with special emphasis on high repetition rate is given. We then present basic design guidelines, and experimentally show that one can push the pulse repetition rate of a Nd: YVO4 laser up to 157 GHz, reaching the fundamental limit to the repetition rate which is given by the pulse duration and thus by the amplification bandwidth. We also demonstrate an air-cooled diode-pumped 10-GHz Nd: YVO4 laser with 2.1-W average output power and 13% electrical-to-optical efficiency, showing the potential of solid-state lasers generating multiwatt, multigigahertz pulse trains with high efficiency.

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Quantum Electronics, IEEE Journal of  (Volume:38 ,  Issue: 10 )