Programmable infrared synthesizers

The intent of this paper is to give a brief overview of salient components and techniques which led to the development of programmable infrared synthesizers absolute frequency accuracy, reproducibility and resettability with standard deviations of about 5 WIz (1.7 x 10 cm ) relative to the primary Cesium frequency standard at the National Bureau of Standards in Boulder, Colorado, has been achieved. 

PROGRAMMABLE, SECONDARY FREQUENCY STANDARDS BASED INFRARED SYNTHESIZERS FOR HIGH RESOLUTION SPECTROSCOPY... 

C. Freed, J. W. Biellnskl, and W. Lo, "Programmable, Secondary Frequency Standard Based Infrared Synthesizer using Tunable Lead-Salt Diode Lasers," Proceedings of Tunable Diode Laser Development and Spectroscopy Applications," SPIE 438, (1983). 

The inherently great spectral purity, intensity, tunability and small beam divergence of infrared lasers have been utilized and combined with readily available commercial R.F. and microwave instruments to construct the equivalents of programmable synthesizers in the infrared frequency... 

---