Modernization of disc laser design using ellipsoid illuminator

Authors

DOI:

https://doi.org/10.20535/2521-1943.2022.6.1.257026

Keywords:

disk laser, pump radiation, active element

Abstract

Solid state disk lasers have a number of advantages over lasers with a rod active element. In particular, due to efficient heat dissipation, there is no thermal deformation of the active element and its transformation from the optical point of view into a lens. That in turn improves the stability of the generated laser beam and reduces the risk to lose of resonator stability. In addition, disk lasers are able to generate high power at a compact size. However, to ensure the direction of the pump radiation on the active element, disk lasers require a complex mirror system of reflection of the pump beams, and therefore have design limitations on the introduction of pump energy into the active element.

This article is dedicated to the development of the design of pumping system, which will increase the intensity of pumping the active element of the disk laser, which will increase the generated power. The article presents the original design of a disk laser with an ellipsoidal illuminator and a tiered system for pumping the active element by diode laser radiation. The results of modeling the heat dissipation from the active element to the refrigerator are presented. The estimation of the efficiency of excitation of the active element when using an ellipsoidal illuminator and the procedure for calculating the parameters of the generated laser beam are given.

References

  1. Z.-W. Fan, Ji-Si Qiu, Zhi-Jun Kang, High beam quality 5 J, 200 Hz Nd: YAG laser system, Light: Science & Applications volume 6, pp. 17004, 2017. DOI:10.1038/lsa.2017.4
  2. R. Lorbeer, B. Ewers, C. Santek, Monolithic thin-disk laser and amplifier concept, Optica, Vol. 7, No. 10, pp. 1409–1414, 2020. https://doi.org/10.1364/OPTICA.402164
  3. S. Feuchtenbeiner, S. Zaske, S. Schad, T. Gottwald, “New generation of compact high power disk lasers”, in Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105110L, 2018. https://doi.org/10.1117/12.2289916
  4. V.P. Garashchuk, Fundamentals of laser physics. (Ukrainian), Кyiv: Pulsary, 2012. pp. 290–294.
  5. S. Bian, Q. Chen, J. S. Qiu, X. X. Tang, “Simulation design of laser diode array side-pumped polygonal Nd: YAG thin-disk laser”, in Proc. SPIE 11562, AOPC 2020: Advanced Laser Technology and Application, 115620W, 2020. https://doi.org/10.1117/12.2579802
  6. Patent US2015270677 МПК Н01S 3/091, 3/06, “Optically pumped semiconductor disk laser i.e. vertical cavity surface emitting laser, has reflection element embodied and arranged such that pump light emerging from pump light source is guided through active region”, 25.09.2015.
  7. Patent US8755416В2 МПК H01S 3/030, “Thin-disk solid state laser for use in field of e.g. shell plate welding on auto body, has semiconductor laser stack group producing pump light that is focused, collimated and deflected within focus cavity to converge on laser crystal”, 17.06.2014.
  8. K. Schuhmann, T. W. Hansch, K. Kirch, “Thin-disk laser pump schemes for large number of passes and moderate pump source quality”, Applied Optics, September 2015. DOI: 10.1364/AO.54.009400
  9. “Diodenlaser order Scheibenlaser”, Europaischer Laser Markt, Branscherfuhrer, 2001. pp. 28, 30, 32.
  10. “3 kW fur neue Markte”, Euro laser, Juni 2003. pp. 12–14.

Published

2022-05-31

How to Cite

[1]
O. Kaglyak, A. Klimova, O. Poleshko, O. Goncharuk, and L. Golovko, “Modernization of disc laser design using ellipsoid illuminator”, Mech. Adv. Technol., vol. 6, no. 1, pp. 56–61, May 2022.

Issue

Section

Up-to-date machines and the technologies of mechanical engineering