Universal charts for optical difference frequency generation in the terahertz domain

Matteo Cherchi, Saverio Bivona, Alfonso C. Cino, Alessandro C. Busacca, Roberto L. Oliveri

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1009-1013
Number of pages5
JournalIEEE Journal of Quantum Electronics
Issue number6
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed


  • Frequency conversion
  • Optical frequency conversion
  • Optical parametric amplifiers
  • Optical propagation in nonlinear media
  • Optical pulse generation
  • Semiconductor materials
  • Submillimeter wave transmitters


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