Absorption Activity Investigation of Saturable Absorber for Dual Wavelengths in Laser Passive Q-Switching System

Sara Abdul Hussien; Abdul Kareem Mahdi Salih

doi:10.17485/IJST/v17i6.2822

Article

Absorption Activity Investigation of Saturable Absorber for Dual Wavelengths in Laser Passive Q-Switching System

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v17i6.2822

Year: 2024, Volume: 17, Issue: 6, Pages: 577-582

Original Article

Absorption Activity Investigation of Saturable Absorber for Dual Wavelengths in Laser Passive Q-Switching System

Sara Abdul Hussien^1*, Abdul-Kareem Mahdi Salih²

¹Bio Medical Engineering, College of Engineering, University of Thi-Qar, Nasiriyah, Iraq
²Physics Department, College of Science, University of Thi-Qar, Nasiriyah, Iraq

*Corresponding Author
Email: [email protected]

Received Date:08 November 2023, Accepted Date:19 December 2023, Published Date:08 February 2024

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

Abstract

Objective: The absorption activity of saturable absorber material (Cr+4: YAG) for dual wavelengths (1.064 μm and 0.946 μm), simultaneously generated in same passive Q-switching system, has been investigated. Methods: This study utilized the mathematical model that was used in our previous study. Rung-Kutta—Fehelberge numerical method has been used to solve this mathematical model. Nd+3: YAG used as an effective medium and Cr+4: YAG used as a saturable absorber in the laser passive Q-switching optical system. Finding: When the population density of saturable absorber increases, the steady state of photons losses occurs at advancement time and the absorption activity reaches to optical bleaching state at advancement time also (it is occurring approximately at time 35 ns from the beginning of the time of pulse construction when the , while at , approximately at time 47 ns). Novelty: The absorption activity of saturable absorber material for a single wavelength of photons oscillating inside the passive Q-switch laser system received attention by some studies. This study verifies or investigates from the behavior of absorption activity of saturable absorber material when encounters photons with two wavelengths oscillating simultaneously inside the laser cavity in order to obtain high power of the pulses.

Keywords: Laser, Passive Qswitching, laser, Dual wavelengths laser, Solid state lasers

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Copyright

© 2024 Hussien & Salih. 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)