High-power, high-repetition-rate picosecond optical parametric oscillators for the near- to mid-infrared

S French, M Ebrahimzadeh, A Miller

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We report high-repetition-rate, singly-resonant, picosecond optical parametric oscillators based on the nonlinear crystals LiB3O5 and KTiOAsO4 which are synchronously pumped by a self-mode-locked Ti:sapphire laser operating at 81 MHz. These devices allow tunable pulse generation from 1.116-3.160 mu m to be achieved. The LiB3O5 system produces average near-infrared output powers of 325 mW and is continuous tuning over the wavelength range 1.16-2.26 mu m. For 1.8 ps input pump pulses, transform-limited signal pulses with durations of 1-1.2 ps and idler pulses with durations of 2-2.2 ps have been generated over 1.2-2.2 mu m, without requirement for dispersion compensation. The KTiOAsO4 system produces average near-infrared output powers of 403 mW, with the signal tuning over 1.116-1.281 mu m and idler tuning over 2.260-3.160 mu m. Without dispersion compensation, signal (idler) pulses with durations between 1.01-1.03 (1.61-2.91) ps have been obtained for 1.2 ps input pump pulses.

Original languageEnglish
Pages (from-to)929-952
Number of pages24
JournalJournal of Modern Optics
Issue number5
Publication statusPublished - May 1996

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