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DOI: 10.17586/1023-5086-2023-90-05-00-00

UDC 621.373:535

All-optical shaping of a 3D self-induced transparency soliton in ⁸⁷Rb vapours

Sergey N. Bagaev¹, Igor B. Mekhov², Igor A. Chekhonin^3*, Mikhail A. Chekhonin⁴

¹Institute of Laser Physics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

^{2, 3, 4}St. Petersburg State University, St. Petersburg, Russia

¹bagayev@laser.nsc.ru https://orcid.org/0000-0003-4470-2779

²mekhov@yahoo.com https://orcid.org/0000-0001-9699-8335

³chekhonin@mail.ru https://orcid.org/0000-0001-6862-6737

⁴chekhonin@bk.ru https://orcid.org/0000-0001-6862-9267

Corresponding author: Igor A. Chekhonin, chekhonin@mail.ru, +7(111) 111-11-11

Abstract

Subject of study. Three-dimensional solitons of the theory of self-induced transparency of laser pulses with a converging cylindrical wave front and different transverse spatial profiles of the pulse field in ⁸⁷Rb vapor. Aim of study. Experimental study of three-dimensional solitons of the theory of self-induced transparency of laser pulses and development of prototypes of new devices for resonant quantum microwave photonics using laser signal processing methods in the microwave region of the spectrum. Method. In the caustic of a focused beam of a laser pump pulse with a cylindrical wave front, a transverse spatial profile of the electric field strength of a special shape is created. The computer generated holograms developed by us can be used to create an arbitrary profile. Main results. The properties of a three-dimensional self-induced transparency soliton are studied for various detuning frequencies of the input pulse field with respect to atomic resonance. The maximum laser pulse power was 8.5 mW; the pulse duration was 4–5 ns. The time resolution of the recording system is 27 ps. It is shown that the all-optical control of the carrier frequency of the input pulse determines the properties of the output pulse – compression of the pulse duration (generation of a strobe pulse), the value of the soliton delay in time, the time shift of the carrier frequency of the soliton. Practical significance. The results obtained in the study of the properties of three-dimensional self-induced transparency solitons will serve as the basis for the development of prototypes of signal processing devices using low-power laser diodes.

Keywords: self-induced transparency, soliton, resonant medium, computer generated hologram

Acknowledgment: this work was supported by the Russian Science Foundation, project № 17–19–01097.

For citation: Bagaev S.N., Mekhov I.B., Chekhonin I.A., Chekhonin M.A. All-optical shaping of a 3D self-induced transparency soliton in ⁸⁷Rb vapours [in Russian] // Opticheskii Zhurnal. 2023. V. 90. № 5. P. 00–00. http://doi.org/10.17586/1023-5086-2023-90-05-00-00

OCIS codes: 060.5530, 050.1590, 060.5625