Abstract

Tunable mid-IR pulses in the range 13004200 cm-1 7.72.4 μm are generated through a phase-matched four-wave mixing process in ordinary mid-IR window materials such as CaF2 and BaF2. In this process the difference frequency ν3=2ν2-ν1 is generated from pump fields ν1 and ν2. The process can be phase matched to different frequencies by adjustment of the angle between the pump fields.

© 2001 Optical Society of America

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