Article

Applied Physics B

, Volume 87, Issue 1, pp 13-16

First online:

A novel THz source based on a two-color Nd:LSB microchip-laser and a LT-GaAsSb photomixer

  • U. WillerAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of TechnologyLaserApplicationCenter, Clausthal University of Technology Email author 
  • , R. WilkAffiliated withDepartment of High-Frequency Engineering, Technical University Braunschweig
  • , W. SchippersAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of Technology
  • , S. BöttgerAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of Technology
  • , D. NodopAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of Technology
  • , T. SchossigAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of Technology
  • , W. SchadeAffiliated withInstitute for Physics and Physical Technologies, Clausthal University of TechnologyLaserApplicationCenter, Clausthal University of Technology
  • , M. MikulicsAffiliated withDepartment of High-Frequency Engineering, Technical University Braunschweig
  • , M. KochAffiliated withDepartment of High-Frequency Engineering, Technical University Braunschweig
    • , M. WaltherAffiliated withFraunhofer Institute for Applied Solid-State Physics
    • , H. NiemannAffiliated withPhysikalisch-Technische Bundesanstalt
    • , B. GüttlerAffiliated withPhysikalisch-Technische Bundesanstalt

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Abstract

A two-color Nd:LSB microchip-laser that simultaneously emits at 1061.3 nm and 1063.9 nm is used for photomixing. Since LT-GaAs which is typically utilized for photomixing cannot be excited efficiently with wavelengths exceeding 1 μm, LT-GaAsSb with a bandgap energy designed to match the laser emission is used here for the first time. With this system THz radiation at 0.7 THz is generated and detected with a bolometer.