Polarisation dynamics of surface-emitting semiconductor lasers at two polarisation switching points in the operating range of injection current

  • Leonid I. Burov Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Pavel M. Lobatsevich Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Dmitry O. Gavrikov Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

Abstract

Numerical simulation of polarisation switching (PS) processes in the case of two relative close PS points was carried out. Analysis of the results obtained shows that if the shift of the PS points is significantly greater than the sum of the PS widths for each of the points, which significantly depends on the ratio of the rate of change of the injection current and the value of the relative gain anisotropy, then the processes of switching polarisation in the area of PS points proceed almost independently. However, if the above condition is not met for the shift of the PS points, then when a certain critical value of the rate of change of the injection current, the nature of the PS begins to change: first, an incomplete PS appears (the degree of polarisation does not reach the limit value) with the subsequent leveling of the PS up to its practical disappearance. This is due to the high inertia of the process of tuning the polarisation of the output radiation near the PS points. The use of triangular pulses with a high rate of current change makes it possible to almost completely extinguish the manifestations of PS, i. e. there is a possibility of not technological, but dynamic exclusion of the influence of PS.

Author Biographies

Leonid I. Burov, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

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

Pavel M. Lobatsevich, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

senior lecturer at the department of general physics, faculty of physics

Dmitry O. Gavrikov, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

student at the faculty of physics

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Published
2025-01-31
Keywords: polarisation switching, surface-emitting semiconductor laser, anisotropy, polarisation hysteresis
How to Cite
Burov, L. I., Lobatsevich, P. M., & Gavrikov, D. O. (2025). Polarisation dynamics of surface-emitting semiconductor lasers at two polarisation switching points in the operating range of injection current. Journal of the Belarusian State University. Physics, 1, 38-48. Retrieved from https://journals.bsu.by/index.php/physics/article/view/6830
Issue
No 1 (2025): Journal of the Belarusian State University. Physics
Section
Laser Physics

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