Abstract
The carrier-envelope-offset (CEO) frequency of pulses from a femtosecond optical parametric oscillator (OPO) was stabilized for without the need for f–2f self-referencing in either the OPO or its pump laser. Interference between the high-frequency modes of the pump supercontinuum and the modes of the non-phase-matched sum-frequency-mixing pulses provided the beat signal used for locking. The bandwidth of the locked CEO-frequency was measured as , and the cumulative phase error recorded over was , representing 1-order-of-magnitude improvement in comparison to previous results.
© 2010 Optical Society of America
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