Browsing by Author "Vickers, REM"

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    Comparison of photoexcited p-InAs THz radiation source with conventional thermal radiation sources
    (American Institute of Physics, 2009-03-15) Smith, ML; Mendis, R; Vickers, REM; Lewis, RA
    P-type InAs excited by ultrashort optical pulses has been shown to be a strong emitter of terahertz radiation. In a direct comparison between a p-InAs emitter and conventional thermal radiation sources, we demonstrate that under typical excitation conditions p-InAs produces more radiation below 1.2 THz than a globar. By treating the globar as a blackbody emitter we calibrate a silicon bolometer which is used to determine the power of the p-InAs emitter. The emitted terahertz power was found to be 98 +/- 10 nW in this experiment. © 2009, American Institute of Physics