Abstract
The availability of new nonlinear optical materials such as AgGaS2 and AgGaSe2 and improvements in compact, tunable, pulsed and continuous-wave (cw) solid-state pump lasers now make it possible to generate tunable, infrared narrow-band coherent radiation over a wide wavelength range (4–18 μm) by means of difference–frequency generation (DFG). This article describes the wavelength and output-power characteristics of a tunable infrared source based on AgGaSe2 and certain proven cw near-infrared pump sources for application to high-resolution spectroscopy.
© 1993 Optical Society of America
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