Physical Approaches to Designing a Two-Cascade Terahertz Laser Generating Difference-Frequency Radiation in a Nonlinear Optical ZnGeP2 Crystal

A. I. Gribenyukov, V. V. Dyomin, I. G. Polovtsev, N. N. Yudin

Research output: Contribution to journalArticle

1 Citation (Scopus)


An optical layout of a two-cascade frequency converter of the mid-IR laser radiation into the terahertz (THz) radiation is proposed. In the first stage it is assumed to convert the Tm:YLF-laser frequency in a Cr+2:ZnSe polycrystal into the radiation with the wavelength ~2–3 μm. The second cascade can be presented as a parametric conversion of the frequencies of two laser sources operating in the ~2–3 μm range into the THz radiation via the difference-frequency mixing in a nonlinear optical ZnGeP2 crystal. The estimates of the terahertz output signal are reported.

Original languageEnglish
Pages (from-to)1980-1986
Number of pages7
JournalRussian Physics Journal
Issue number11
Publication statusPublished - 1 Mar 2018
Externally publishedYes



  • difference frequency generator
  • nonlinear-parametric frequency conversion
  • THz range

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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