Universal charts for optical difference frequency generation in the terahertz domain

Details Universal charts for optical difference frequency generation in the terahertz domain Universal charts for optical difference frequency generation in the terahertz domain

2009-06-19

arxiv.org/abs/0906.3697v2

IEEE J. Quantum Electron. 46, 1009-1013 (2010)

Physics

Optics

3 pages in 2 columns format, 3 figures. GaSe analysis has been corrected. Fig. 3 has been replaced

Scientific paper

10.1109/JQE.2010.2042791

We present a universal and rigorous approach to study difference frequency generation in the terahertz domain, keeping the number of degrees of freedom to a minimum, through the definition of a suitable figure of merit. The proposed method relies on suitably normalized charts, that enable to predict the optical-to-terahertz conversion efficiency of any system based on wave propagation in quadratic nonlinear materials. The predictions of our approach are found to be in good agreement with the best experimental results reported to date, enabling also to estimate the d22 nonlinear coefficient of high quality GaSe.

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