Journal
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Volume 20, Issue 7, Pages S121-S127Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0268-1242/20/7/001
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We present an overview of pulsed THz emission and detection schemes and give results of a highly efficient, water-cooled, semi-large aperture THz emitter. Using electro-optic detection we obtain a dynamic range of more than 5000 in a total measurement time of 20 ms, which represents the highest dynamic range for THz emitters centred around femtosecond laser oscillators to date. We find that the detection sensitivity is completely determined by the photon shot-noise of the probe laser beam. As an application of our efficient THz emitter, we present the first measurement of a phonon resonance in a THz apertureless scanning near-field optical microscopy measurement.
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