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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Application of 1.55 /spl mu/m photomixers as local oscillators & noise sources at millimetre wavelengths


    Contributors:
    Huggard, P.G. (author) / Azcona, L. (author) / Ellison, B.N. (author) / Shen, P. (author) / Gomes, N.J. (author) / Davies, P.A. (author)


    Publication date :

    2004-01-01


    Size :

    198202 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Optoelectronic terahertz sources based on photomixers

    Chen, P. / Pearson, J. C. / Pickett, H. M. et al. | NTRS | 2002


    Optoelectronic Terahertz sources based on photomixers

    Chen, P. / Pickett, H. M. / Pearson, J. C. et al. | NTRS | 2003


    Solar Active Region Development at Millimetre Wavelengths

    Pohjolainen, S. / Urpo, S. | British Library Online Contents | 1997


    Coronal Holes Observed at Short Millimetre Wavelengths

    Nagnibeda, V. G. | British Library Online Contents | 1997


    Modeling of photoconductive terahertz photomixers

    Saeedkia, D. / Safavi-Naeini, S. / Mansour, R.R. | IEEE | 2005