Frequency multiplication and mixing on InP and GaAs Schottky diodes in IR and FIR regions and their use for optical time clock

摘要

InP and GaAs Schottky-barrier diodes (SBD) were examined as nonlinear elements for frequency conversion in IR (30 THz) and conversion multiplier in far IR waves. In FIR wave region harmonics with number N=37 at a frequency of 1.63 THz and with N=27 at a frequency of 2.45 THz are obtained at GaAs SBD from a millimetre-band oscillator. Use of a submillimetre (SMM) CH/sub 2/F/sub 2/-laser (1626.6 GHz) and a mm wave oscillator (64.6 GHz) allowed one to observe a frequency difference between two laser lines of 1691.21 GHz with InP SBD and 146 GHz with GaAs SBD.