| INFRARED SOURCES FOR SPECTROSCOPY BASED ON DIFFERENCE FREQUENCY GENERATION (1996) | |||||||||
Abstract | |||||||||
| Author Institution: Departments of Chemistry and Electrical and Computer Engineering and Rice Quantum Institute, Rice University; Departments of Chemistry and Electrical and Computer Engineering and Rice Quantum Institute, Aerodyne Research Inc.; Time and Frequency Division, National Institute of Standards and Technology; Time and Frequency Division, Naval Research Laboratory. Rapid advances are being made in infrared sources based on difference frequency generation (DFG) through the introduction of new nonlinear materials, build-up cavity enhancement, and new diode-based pump and signal sources. These infrared sources have obvious application to high resolution molecular spectroscopy. In addition, the combination of all these elements promises a wide variety of compact, rugged, portable IR sources for applications such as environmental monitoring. Recent results obtained for difference frequency mixing in $AgGaS_{2}$, periodically poled $LiNbO_{3}$ and GaSe using diode, Nd:YAG, and Ti:sapphire pump sources will be reported. The suitability of the sources based on diode and Nd:YAG pumps for atmospheric monitoring has been demonstrated by the detection of ambient methane and CO. | |||||||||
Publication details | |||||||||
| |||||||||