Degenerate 1 GHz repetition rate femtosecond optical parametric oscillator
M. Vainio, M. Merimaa, L. Halonen, and K. Vodopyanov
We report a degenerate femtosecond optical parametric oscillator (OPO) that is synchronously pumped by a mode-locked Ti:sapphire laser at 1 GHz repetition rate. The OPO produces an 85 nm (10 THz) wide frequency comb centered at 1.6 ?m. Stable long-term operation with >100mW of average output power has been achieved.
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