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

Neuartige THz-Quelle basierend auf einem zwei-farbigen Nd-LSB Mikrochiplaser und einem LT-GaAsSb Photomischer
: Willer, U.; Wilk, R.; Schippers, W.; Nodop, D.; Böttger, S.; Schossig, T.; Schade, W.; Mikulics, M.; Koch, M.; Walther, M.; Niemann, H.; Güttler, B.


Applied Physics. B 87 (2007), No.1, pp.13-16
ISSN: 0340-3793
ISSN: 0721-7269
ISSN: 0946-2171
ISSN: 1432-0649
Journal Article
Fraunhofer IAF ()
terahertz; DFB laser; low temperature GaSb; time domain spectroscopy; photomixer; THz

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 mu m, 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.