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High-power widely-tunable picosecond pulses from an all-solid-state synchronously-pumped optical parametric oscillator
M.J.McCarthy, S.D.Butterworth and D.C.Hanna
The operation is reported of an all-solid-state singly-resonant synchronously-pumped lithium triborate optical parametric oscillator (OPO). Two different configurations of the gain medium are reported. The first gain medium has antireflection-coated faces, and the second Brewster-angled faces. The antireflection-coated (Brewster-angled) device had an oscillation-threshold average pump power of 90 mW (170 mW) at 523 nm. At 2.8 (1.9) times threshold, the pump depletion was 50% (60%), and the oscillator converted 30% (34%) of the pump radiation into tunable output in pulses of ~1 ps duration. Temperature-tuned noncritical phase matching in the parametric oscillator yielded radiation continuously tunable over the range 0.85-1.36 μm (0.72-1.91 μm) with up to 43 mW (89 mW) of average power in the resonated wave output, and 33 mW (44 mW) in the nonresonated wave output.
Optics Communications (1993) Vol.102(3-4) pp.297-303
Copyright University of Southampton 2006