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

Summary form only given, as follows.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.