Fourier-transform limited ns-Pulses Tunable Over a Wide Spectral Range Using a Ti:Sapphire Laser and Non-Linear Frequency Conversion Processes

This article demonstrates a proof-of-concept system capable of producing Fourier-transform limited ns-pulses tunable over a wide spectral range. By combining the large tuning range of the Ti:saphire crystal and combinations of nonlinear frequency conversion processes including sum-and difference frequency mixing with the pump radiation, a spectral coverage of 180 nm to 5000 mum is possible when considering up to three nonlinear processes.