Now showing items 1-4 of 4
A tunable laser-based mid-infrared source for use in trace gas detection
A new widely tunable mid-infrared (IR) source based on difference-frequency generation (DFG) in Gallium Selenide (GaSe) for use in high-resolution spectroscopy and trace gas detection is described. The characteristics of ...
Compact gas sensors based on mid-infrared frequency conversion of semiconductor lasers
Design, development, and application of novel all-solid-state spectroscopic gas sensors is reported. These compact instruments employ mid-infrared difference-frequency generation pumped by room-temperature semiconductor ...
Difference frequency generation: Spectrometers and spectroscopy
The theory of difference frequency generation has been further developed. Derived from basic principles, the equations developed here accurately predict the conversion of power to the idler wave. Critical phasematching can ...
Mid-infrared laser absorption-based sensors for trace gas detection using difference-frequency generation
Real-time, compact, laser absorption-based sensors for trace gas detection have been developed. Difference-frequency generation in a periodically poled lithium niobate (PPLN) crystal pumped by two compact lasers, a ...