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Nonlinear Optics and Photonics$
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Guang S. He

Print publication date: 2014

Print ISBN-13: 9780198702764

Published to Oxford Scholarship Online: December 2014

DOI: 10.1093/acprof:oso/9780198702764.001.0001

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Terahertz Nonlinear Photonics

Terahertz Nonlinear Photonics

(p.559) 17 Terahertz Nonlinear Photonics
Nonlinear Optics and Photonics

Guang S. He

Oxford University Press

Terahertz (THz) technology has undergone tremendous growth, with strong implications for spectroscopy, remote sensing, imaging, and optoelectronics. Nonlinear optical techniques have played important roles in the development of THz technology. For example, optical rectification (or difference-frequency generation) has become one of the major mechanisms for the generation of broadband single-cycle or near single-cycle THz pulses. Electro-optical sampling based on the Pockels effect has been widely used to detect THz waveforms. With advances in ultrafast lasers and nonlinear optical techniques, it is now possible to produce intense single-cycle THz pulses with peak electric field exceeding 107 V/m. The strong THz electric field associated with these ultrashort electromagnetic pulses provides unique opportunities not only to investigate new nonlinear optical effects in the THz spectral range, but also to probe novel ultrafast nonlinear phenomena in the single-cycle regime.

Keywords:   Terahertz technology, optical rectification, difference-frequency generation, electro-optical sampling, nonlinear optical technique, ultrafast laser

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