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Coherent electro-optical detection of terahertz radiation from an optical parametric oscillator

 
: Meng, F.Z.; Thomson, M.D.; Molter, D.; Löffler, T.; Jonuscheit, J.; Beigang, R.; Bartschke, J.; Bauer, T.; Nittmann, M.; Roskos, H.G.

:
Postprint (2.9 MByte; PDF; )

Optics Express 18 (2010), No.11, pp.11316-11326
ISSN: 1094-4087
English
Journal Article, Electronic Publication
Fraunhofer IPM ()
terahertz imaging; electro-optical materials; photodiode

Abstract
We report the realization of coherent electro-optical detection of nanosecond terahertz (THz) pulses from an optical parametric oscillator, which is pumped by a Q-switched nanosecond Nd:YVO4 laser at 1064 nm and emits at ~1.5 THz. The beam profile and wavefront of the THz beam at focus are electro-optically characterized toward the realization of a real-time THz camera. A peak dynamic range of ~37 dB/ square root of Hz is achieved with single-pixel detection.

: http://publica.fraunhofer.de/documents/N-133976.html