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Control of spectral shift, broadening and pulse compression during mid-IR self-guiding in high-pressure gases and their mixturesстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Migal E.A., Pushkin A.V., Bravy B.G., Minaev N.V., Potemkin F.V.
- Журнал: Optics Letters
- Год издания: 2022
- Издательство: Optical Society of America
- Местоположение издательства: United States
- DOI: 10.1364/ol.450508
- Аннотация: Precise control of the nonlinear optical phenomena is the stumbling block of the spectral broadening and pulse compression techniques for high-power laser systems. Here we demonstrate that generation of the blue and red components under filamentation of 4.55-μm mid-IR pulses can be easily adjusted independently through the use of inert and molecular gases, while uniform broadening up to 1-μm bandwidth at 1/e2 level relies on the proper choice of gas mixture and its compounds partial pressure. Such synthesized media provides a feasible route for free of damage control of pulse spectral broadening and compression for gigawatt peak power laser systems operating in mid-IR. Additional management of generated spectrum can be realized through the adjustment of focusing conditions. The resulted pulse is compressed by a factor of 2.6 down to 62 fs pulse duration (4.1 optical cycles) with additional dispersion compensation. Controllable nonlinear compression down to four-optical cycles keeping the millijoule energy level of mid-IR laser pulse provides direct access to extreme nonlinear optics.
- Добавил в систему: Потёмкин Фёдор Викторович