This paper describes two types of waveguide modulators designed for CO2 laser frequency shifting applications. The first one is a low optical loss ThF4 buffered GaAs waveguide, interfaced with a broadband microwave transmission line operating in the X- and Ku-band (8-18 GHz). The second one is a GaAs single mode waveguide modulator operating in the baseband (0-5 GHz). Device structures and performance will be detailed.
P. K. Cheo,
R. T. Brown,
"Recent Advances In Wideband Waveguide Modulators For CO2 Lasers", Proc. SPIE 0999, Laser Radar III, (18 February 1989); doi: 10.1117/12.960221; https://doi.org/10.1117/12.960221