Journal
OPTICS EXPRESS
Volume 17, Issue 8, Pages 6623-6628Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.006623
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- Bundesministerium fur Bildung und Forschung [FKZ 13N9297]
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We present an optical parametric oscillator pumped by a single mode Q-switched nanosecond Nd:YVO4 laser for terahertz generation in periodically poled lithium niobate with a new phase matching scheme. This new method leads to an emission of terahertz radiation close to the Cherenkov angle and to a parallel propagation of the pump and signal wave. The emission frequency of this novel source is chosen by the poling period to 1.5 THz. For spectral narrowing the signal wave of the OPO is injection seeded. In the optical spectrum also cascaded processes are observed demonstrating a powerful generation of terahertz waves. (c) 2009 Optical Society of America
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