Pulsed lasing in a broad wavelength range in Cr:LiSrAlF6 crystal

Popov, E.E., Sergeev, A.А., Pogoda, A.P., Petrov, V.M., Boreisho, A.S.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Попов Е.Э., Сергеев А.А., Погода А.П., Петров В.М., Борейшо А.С. Импульсная генерация излучения в широком диапазоне длин волн на кристалле LiSrAlF6:Cr // Оптический журнал. 2022. Т. 89. № 5. С. 11–20. http://doi.org/ 10.17586/1023-5086-2022-89-05-11-20

Popov E.E., Sergeev A.A., Pogoda A.P., Petrov V.M., Boreisho A.S. Pulsed lasing in a broad wavelength range in Cr:LiSrAlF6 crystal [in Russian] // Opticheskii Zhurnal. 2022. V. 89. № 5. P. 11–20. http://doi.org/ 10.17586/1023-5086-2022-89-05-11-20

For citation (Journal of Optical Technology):

E. E. Popov, A. A. Sergeev, A. P. Pogoda, V. M. Petrov, and A. S. Boreisho, "Pulsed lasing in a broad wavelength range in Cr:LiSrAlF₆ crystal," Journal of Optical Technology. 89(5), 255-261 (2022). https://doi.org/10.1364/JOT.89.000255

Abstract:

Subject of study. The lasing spectra of a pulsed laser based on a Cr:LiSrAlF₆ active medium are studied. Method. An intracavity transmission volume Bragg grating was used as the lasing mode on two aliquant wavelengths and wavelength tuning. The grating was recorded in a photo-thermo-refractive glass. Main results. For the first time in Russia, simultaneous narrowband lasing was demonstrated at two aliquant wavelengths in the band of 795–895 nm in a Cr:LiSrAlF₆ crystal. The use of a volume transmission Bragg grating for continuous tuning of the central wavelength of the generated laser emission was demonstrated using additional feedback through a mirror with a high reflection coefficient positioned in the first diffraction order. Practical significance. Pulsed lasers with tunable wavelengths are applied in various scientific and practical applications including ecological monitoring of atmosphere conditions. The lasing at two aliquant wavelengths investigated in this study enables the design of high-power pulsed sources of terahertz radiation in the range of 15.5–27.1 THz.

Keywords:

LiSrAlF6:Cr-laser, terahertz radiation, Bragg grating, wavelength tuning, passive Q-switching mode

Acknowledgements:

The research was carried out in the Federal State Budget Educational Institution for Higher Education D. F. Ustinov Baltic State Technical University “Voenmekh” with financial support from the Ministry of Science and Higher Education of the Russian Federation (supplementary agreement of 9 June 2020 No. 075-03-2020-045/2 for the execution of the base part of the state assignment “Development of the fundamental principles of the assembly and control of the groups of high-speed unmanned space- or air-based craft and groups of ground-based robotic complexes”).

OCIS codes: 140.0140

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