Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

Dunya Saad; Hussein; Abdulkareem Mahdi Salih

doi:10.17485/IJST/v16i39.1744

Article

Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i39.1744

Year: 2023, Volume: 16, Issue: 39, Pages: 3353-3360

Original Article

Rate Equations Model to Simulate the Performance of Passive Q-Switched Laser with Raman Medium Optical System

Dunya Saad¹, Hussein¹, Abdulkareem Mahdi Salih^1*

¹Physics Dep. , College of Science , Thi-Qar University, ThiQar, Iraq

*Corresponding Author
Email: [email protected]

Received Date:02 August 2023, Accepted Date:14 September 2023, Published Date:25 October 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objective: Mathematical model of rate equations was proposed to simulate the performance of laser system to generate passive Q-switching laser pulse, which interacting with Raman medium to produce Stokes and anti-Stokes pulses. Methods: The proposed rate equations model has been tested theoretically in optical system consist of Nd:YVO4, PbWO4, and Cr+4:YAG as active medium, Raman medium, saturable absorber material respectively. Rung-Kutta–Fehelberg numerical method used in the solve of the model. The results were showed good compatibility compared with those of previous studies. After performance the verification steps, this model was tested in the study of the effect of saturable absorber ions concentration on the characteristics of passive Q-switching, Stokes, anti-Stokes pulses. Findings: The proposed rate equations model it is possible adopt in theoretical studies related to high power pulses interaction with Raman medium to generate Stokes and anti-Stokes pulses. Novelty: Add new mathematical equations and terms to that of previous mathematical models. The models consist of six equations instead of four or five equations.

Keywords: Laser, Passive QSwitching Pulse, Stokes and Anti-Strokes Pulse

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Copyright

© 2023 Saad et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)