The 1M3 and the 1M5 harmonic generator
's configurations are exactly the same, and only controlling the biases of the diodes enables them to generate either the IM3 or the 1M5 harmonic components without any trimming.
This topology of a harmonic generator
(MESFET at pinchoff) and filter section was used previously to produce an S-band to C-band frequency doubler.
Using a 95 GHz Gunn, followed by a harmonic generator
, dynamic ranges on successive harmonics can be observed on a standard WR-6 oversized waveguide harmonic mixer as 110 dB at 190 GHz, 95 dB at 285 GHz, 82 dB at 380 GHz, 70 dB at 475 GHz and 50 dB at 560 GHz.
Electronically activated two-position mirrors direct the C|O.sub.2~ laser beam through the harmonic generator
crystal for short wavelength operation and around the crystal for long wavelength operation.
The harmonic generator
(HG) is the source and a HM is the detector.
The loop section includes the reference amplifier, a harmonic generator
, a sampling phase detector and a loop filter/search oscillator.
This family of harmonic generators
offer wideband coverage from 2-18 GHz and 2-20 GHz.
Options include second, third, fourth and fifth harmonic generators
. The company also offers optical attenuators that attenuate energy output without affecting beam quality.