Towards optical attosecond pulses: Broadband phase coherence between an ultrafast laser and an OPO via lock-to-zero CEO stabilization

摘要

The carrier-envelope-offset frequencies of the pump, signal, idler and related sum-frequency mixing pulses have been locked to 0 Hz in a 20-fs-Ti:sapphire-pumped optical parametric oscillator, satisfying a critical prerequisite for broadband optical pulse synthesis.