The matrix effect on generation of quasi-three-level continuous wave neodymium laser under inhomogeneous pumping

  • Vаleryiа I. Gerаsimenko Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Ihаr V. Stаshkevitch Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

Abstract

The main generation characteristics of a neodymium-doped laser with a quasi-three-level scheme are analyzed for most common crystalline matrices. The energy characteristics of radiation from such a laser with different matrices in the stationary mode are studied theoretically. The operation of both the end-pumped and transversely-pumped laser has been simulated. The results of the calculations show that allowance for the spatial inhomogeneity of the pump beam, both for longitudinal and transverse excitation, leads to the increased calculated value of the pump threshold power and to the decreased generation efficiency parameter compared to the results for the point model of laser. It is demonstrated that the two matrices YAG and GGG have optimal threshold pump powers and slope efficiencies due to lower reabsorption losses.

Author Biographies

Vаleryiа I. Gerаsimenko, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

masters degree student at the department of laser physics and spectroscopy, faculty of physics

Ihаr V. Stаshkevitch, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of laser physics and spectroscopy, faculty of physics

References

  1. Stashkevich I. V., Gerasimenko V. I. The matrix effect on the generation of quasi­three­level neodymium laser in the stationary mode. J. Belarus. State Univ. Phys. 2017. No. 1. P. 88–94 (in Russ.).
  2. Stashkevich I. V., Novitskaya R. I. The lasing characteristics of quasi­three­level diode­pumped Nd : KGW laser. Vestnik BGU. Ser.1, Fiz. Mat. Inform. 2016. No. 3. P. 71–75 (in Russ.).
  3. Risk W. P. Modeling of longitudinally pumped solid­state lasers exhibiting reabsorption losses. J. Opt. Soc. Am. 1988. Vol. 5, issue 7. P. 1412–1423.
Published
2019-01-20
Keywords: neodymium laser, quasi­-three-­level scheme, spatial beam inhomogeneity, slope efficiency, pump power  threshold, Nd : KGW, Nd : GVO, Nd : YVO, Nd : YAG, Nd : GGG, Nd : YAP
How to Cite
GerаsimenkoV. I., & StаshkevitchI. V. (2019). The matrix effect on generation of quasi-three-level continuous wave neodymium laser under inhomogeneous pumping. Journal of the Belarusian State University. Physics, 2, 11-16. Retrieved from https://journals.bsu.by/index.php/physics/article/view/481
Issue
No 2 (2018): Journal of the Belarusian State University. Physics
Section
Laser Physics

Copyright (c) 2018 Journal of the Belarusian State University. Physics

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