Low-threshold femtosecond optical parametric oscillator based on chirped-pulse frequency conversion

• We report what is to our knowledge the first demonstration of a femtosecond optical parametric oscillator based on chirped-pulse frequency conversion in a long crystal of aperiodically poled potassium titanyl phosphate. The minimum pump threshold power was 15 mW, and a signal slope efficiency of 35% was achieved. Continuous tuning from 1190 to 1450 nm was obtained for an average pump power of 800 mW.

Nyckelord

poled lithium-niobate

2nd-harmonic generation

compression

ktiopo4

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