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A high-stability and excellent spectral purity 72-GHz Gunn oscillator was realized to characterize ultra-wide-band Schottky diodes based on intrinsic InP and InSb semiconductors. The developed microwave oscillator shows a relative frequency stability of 2×10-9 for observation times of 1 s and a collapse frequency of 4 THz. Preliminary frequency measurements of different emission lines of a far infrared laser demonstrate good detection efficiency with a typical bandwidth of 1 THz for these novel optical receivers.
Instrumentation and Measurement, IEEE Transactions on (Volume:52 , Issue: 4 )
Date of Publication: Aug. 2003