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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 8:15 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
Study of Laser Passively Q-Switching Regime
Authors:
Camelia Gavrila*, Ion Gruia**, Ion Lancranjan***
Affiliation:
* Technical University of Civil Engineering Bucharest, cgavrila2003@yahoo.com
** University of Bucharest, Physics Faculty, gruia_ion@yahoo.com
***Advanced Study Center – National Institute for Aerospace Research “Elie Carafoli”, J_J_F_L@yahoo.com
E-mail
cgavrila2003@yahoo.com
Keywords:
solid-state lasers
Abstract:
In this paper the technique of solid-state lasers passive optical Q-switching is numerically investigated considering the case of longitudinally and transversally uniform photon, population inversion and absorption centres densities. The coupled differential equations defining photon, population inversion and absorption centers densities are numerically solved being the basis of laser functional simulation. For validating the results, the numerical simulations are performed using the several software packages, mostly SCILAB programs. The developed SCILAB programs can be used for a large range of saturable absorption centre and active media parameters, mainly the initial (low signal) optical transmittance of the passive optical Q-switch. The programs can be applied for passively Q-switched solid state lasers of several types emitting at several NIR wavelengths, in domain 1 ÷ 2 m. The results of the numerical simulation are in good agreement with theory proposed in this paper and with experimental data observed in the case of LiF:F2- passively Q-switched Nd:YAG lasers.
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