Ultrafast commercial photodiodes have been incorporated into mm-wave waveguide mounts. A method of rapidly characterizing the frequency response of these photomixers using spontaneous-spontaneous beating of light from an erbium doped fibre amplifier (EDFA) is described. The combination of photomixer and EDFA forms a bright, single mode, continuum source suitable for spectroscopy. Results show that the available power is significantly greater than that from a mercury arc lamp. A new photomixer design, featuring a combined probe and filter structure, impedance matched over the W-band to both the coplanar output line on the photodiode chip and to reduced height milled waveguide, is also presented.
Application of 1.55 /spl mu/m photomixers as local oscillators & noise sources at millimetre wavelengths
2004-01-01
198202 byte
Conference paper
Electronic Resource
English
Optoelectronic terahertz sources based on photomixers
NTRS | 2002
|Optoelectronic Terahertz sources based on photomixers
NTRS | 2003
|Solar Active Region Development at Millimetre Wavelengths
British Library Online Contents | 1997
|Coronal Holes Observed at Short Millimetre Wavelengths
British Library Online Contents | 1997
|Modeling of photoconductive terahertz photomixers
IEEE | 2005
|