Narrow-band tunable source of submillimeter waves

Pavel P. Geiko; Yuri M. Andreev; Aleksander I. Gusamov

doi:10.1117/12.375395

25 January 2000 Narrow-band tunable source of submillimeter waves

Pavel P. Geiko, Yuri M. Andreev, Aleksander I. Gusamov

Proceedings Volume 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy; (2000) https://doi.org/10.1117/12.375395
Event: 13th Symposium and School on High-Resolution Molecular Spectroscopy, 1999, Tomsk, Russian Federation

Abstract

Phase-matched difference-mixing of the frequency tunable CO₂ lasers in three nonlinear crystals is considered to generate a tunable submillimeter radiation. Optical properties of ZnGeP₂, AgGaSe₂, and new promising nonlinear mixed crystals like AgGa_xIn_1-xSe₂ in middle IR and FIR spectral ranges have been investigated. The coefficients of Sellmeier dispersion equations for AgGa_xIn_1-xSe₂ and AgGaSe₂ for IR and those for ZnGeP₂ for FIR have been determined. Phase- matching curves and phase-matching angular widths for both direct and backward waves have been calculated. A principle possibility of application of the emission converted is shown to control some atmospheric pollutants.

Citation Download Citation

Pavel P. Geiko, Yuri M. Andreev, and Aleksander I. Gusamov "Narrow-band tunable source of submillimeter waves", Proc. SPIE 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy, (25 January 2000); https://doi.org/10.1117/12.375395

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