Single-mode lasing in the diode-pumped passive Q-switch lasers based on neodymium doped yttrium aluminate and ytterbium-erbium glass active elements

Bogdanovich, M.V., Grigoriev, A.V., Dudikov, V.N., Ryabtsev, A.G., Ryabtsev, G.I., Tatura P.O., Teplyashin L.L., Shpak, P.V., Shchemelev, M.A.

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Богданович М.В., Григорьев А.В., Дудиков В.Н., Рябцев А.Г., Рябцев Г.И., Татура П.О., Тепляшин Л.Л., Шпак П.В., Щемелев М.А. Одномодовая генерация в диоднонакачиваемых лазерах на основе алюмината иттрия, допированного неодимом, и иттербий-эрбиевого стекла с пассивной модуляцией добротности // Оптический журнал. 2023. Т. 90. № 8. С. 17–28. http://doi.org/10.17586/1023-5086-2023-90-08-17-28

Bogdanovich M.V., Grigor’evA.V., DudikovV.N., RyabtsevA.G., Ryabtsev G.I., TaturaP.O., TeplyashinL.L., Shpak P.V., Shchemelev M.A. Single-mode lasing in the diode-pumped passive Q-switch lasers based on neodymium doped yttrium aluminate and ytterbium-erbium glass active elements [in Russian] // Opticheskii Zhurnal. 2023. V. 90. № 8. P. 17–28. http://doi.org/10.17586/1023-5086-2023-90-08-17-28

For citation (Journal of Optical Technology):

Maxim Bogdanovich, Alexandr Grigor’ev, Valery Dudikov, Andrew Ryabtsev, Gennadii Ryabtsev, Pavel Tatura, Leonid Teplyashin, Pavel Shpak, and Maxim Shchemelev, "Single-mode lasing in diode-pumped passive Q-switch lasers based on neodymium-doped yttrium aluminate and ytterbium-erbium glass active elements," Journal of Optical Technology. 90(8), 428-434 (2023). https://doi.org/10.1364/JOT.90.000428

Abstract:

Subject of study. Two types of transversally diode pumped lasers, namely Nd:YAG laser with Cr⁴⁺:YAG passive Q-switch (the lasing wavelength is 1064 nm) and Yb,Er-glass laser with Со²⁺:MgAl₂O₄ passive Q-switch (1535 nm) have been considered. Purpose of the study is experimental and theoretical investigation of the spectral selection properties of the solid-state lasers, the monopulses of which are formed by the bleaching filters. Method. The conditions for single frequency lasing in laser cavity were defined. The time intervals characterizing the evolution of the monopulses in the cavity of lasers with the bleaching filters, as well as the number of the related radiation trips within the cavities up to the moment of achievement of maximum lasing power were determined by numerical simulation. Main results. Based on these data it has been shown that the lasing regime within the cavity of the Yb,Er glass laser with the Со²⁺:MgAl₂O₄ passive Q-switch is set for a longer period of time compared to the Nd:YAG laser with Cr⁴⁺:YAG passive Q-switch. Therefore, the single-mode regime in the Yb,Er glass laser is realized without introducing an additional frequency-dependent element to the cavity. In contrast to this the single-mode regime in the Nd:YAG laser can be achieved by formation of interference-polarizing Lyot filter due to thermally-induced birefringence of the active element and polarizer only. Practical significance. The obtained results are applicable for development and creation of compact single-frequency diode-pumped lasers operating within the near infrared spectral including the eye safety region.

Keywords:

solid-state laser, Nd:YAG, Yb,Er-glass, passive Q-switch, transversal diode pump, single-mode laser radiation

Acknowledgements:

the work was carried out with the support of the State Research Institute Program “Photonics and Electronics for Innovation, task 1.4” and the BRFFI F21UZBG–025 project. The authors express their gratitude to K.I. Lantsov for his help in the work

OCIS codes: 140.3480, 140.3540, 140.3580, 140.3430

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