NASA NTRS · 19890051434
Coherent tunable far infrared radiation
Abstract
Tunable, CW, FIR radiation has been generated by nonlinear mixing of radiation from two CO2 lasers in a metal-insulator-metal (MIM) diode. The FIR difference-frequency power was radiated from the MIM diode antenna to a calibrated InSb bolometer. FIR power of 200 nW was generated by 250 mW from each of the CO2 lasers. Using the combination of lines from a waveguide CO2 laser, with its larger tuning range, with lines from CO2, N2O, and CO2-isotope lasers promises complete coverage of the entire FIR band with stepwise-tunable CW radiation.
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Jennings, D. A.. 1989-04-01. Coherent tunable far infrared radiation. https://ntrs.nasa.gov/citations/19890051434
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