We review the design of an LBO optical parametric oscillator (OPO) synchronously pumped by a cw mode-locked Ti:sapphire laser. The synchronously pumped OPO produces 100 fsec pulses at 1.3 and 1.5 micrometers as well as near 600 nm using frequency doubling. We also demonstrate the synchronization of the pump, signal and idler pulses on the 100 fsec time scale. We then review applications that utilize these capabilities. These applications include studies of: InGaAs absorbers, GaAs quantum wells, electro-optic modulators, soliton-soliton interactions, energy transfer in photosynthetic bacteria, uncaging of biological molecules using confocal microscopy, electronic distributions and two photon fluorescence in dyes.
Recent advances in mode-locking techniques for Titanium Sapphire lasers will be presented
covering: Active mode-locking, Coupled Cavity mode-locking (or Additive Pulse modelocking),
self mode-locking, and Regenerative mode-locking. In addition, pulse compression of
picosecond outputs to 50 femtoseconds will be discussed.
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