Numerical simulation of a laser with a Q-switched cavity for production of ultrashort pulses

Alekseev, V.L., Goryachkin, D.A., Gryaznov, N.A., Kuprenyuk, V.I., Rodionov, A.Y., Sosnov, E.N.

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For Russian citation (Opticheskii Zhurnal):

Грязнов Н.А., Родионов А.Ю., Горячкин Д.А., Купренюк В.И., Соснов Е.Н., Алексеев В.Л. Численное моделирование лазера с переключаемой добротностью резонатора для генерации ультракоротких импульсов // Оптический журнал. 2021. Т. 88. № 4. С. 3–11. http://doi.org/10.17586/1023-5086-2021-88-04-03-11

N. A. Gryaznov, A. Yu. Rodionov, D. A. Goryachkin, V. I. Kuprenyuk, E. N. Sosnov, and V. L. Alekseev Numerical simulation of a laser with a Q-switched cavity for production of ultrashort pulses [in Russian] // Opticheskii Zhurnal. 2021. V. 88. № 4. P. 3–11. http://doi.org/10.17586/1023-5086-2021-88-04-03-11

For citation (Journal of Optical Technology):

N. A. Gryaznov, A. Yu. Rodionov, D. A. Goryachkin, V. I. Kuprenyuk, E. N. Sosnov, and V. L. Alekseev, "Numerical simulation of a laser with a Q-switched cavity for production of ultrashort pulses," Journal of Optical Technology. 88(4), 169-174 (2021). https://doi.org/10.1364/JOT.88.000169

Abstract:

A theoretical model was developed to calculate lasing modes for giant pulses in solid-state lasers with Q-switched cavities. The lasing process begins with steady-state mode locking. Then, when a control pulse is fed to the cavity electro-optic modulator, the light propagating in the cavity is amplified. When the laser pulse reaches maximum energy, the cavity opens, producing a single ultrashort pulse. Simulations performed using a commercial 50 W Nd:YAG solid-state CW laser diode pump module indicated that, when the driver parameters for the electro-optical modulator are optimized, the cavity switching mode can be used for high-efficiency extraction of almost all the energy (up to 20 mJ) stored in the laser medium in steady-state mode in the form of a single pulse with a duration in the hundreds of picoseconds.

Keywords:

mode locking, cavity switching, controlled composite exit mirror

Acknowledgements:

The research was supported by Ministry of Education and Science of the Russian Federation within the state assinment No. 075-00924-19-00 of 28.12.2018.

OCIS codes: 140.0140

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