Abstract
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 language | English |
|---|---|
| Pages (from-to) | 1980-1986 |
| Number of pages | 7 |
| Journal | Russian Physics Journal |
| Volume | 60 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Mar 2018 |
| Externally published | Yes |
Keywords
- difference frequency generator
- nonlinear-parametric frequency conversion
- THz range
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Gribenyukov, A. I., Dyomin, V. V., Polovtsev, I. G., & Yudin, N. N. (2018). Physical Approaches to Designing a Two-Cascade Terahertz Laser Generating Difference-Frequency Radiation in a Nonlinear Optical ZnGeP2 Crystal. Russian Physics Journal, 60(11), 1980-1986. https://doi.org/10.1007/s11182-018-1311-z