Performance simulation of passive Q-switched laser system with intracavity Raman conversion medium

Ghofran Zamel Hassan, Abdul-Kareem Mahdi Salih


The system performance of intra-cavity Stimulated Raman Scattering SRS with passive Q-switching has been simulated.  Neodymium  :Gadolinium  Vanadium  ( Nd:GdVO4), Chromium : Yttrium Aluminum Garnet( Cr+4:YAG),  and Barium Nitrate Ba(NO3)2 are utilizing as a active medium(AM), saturable absorber material (SAM), and Raman medium (RM) respectively. Mathematical model of rate equations has been formulated in this study. The model solved numerically by  Rung –Kutta- Fehalberg method. Significant passive Q-switching and Stokes pulses to be simulated, also the effect of optical length on characteristics(duration and energy) of these pulses has been investigated. The study conclude that the power decrease while the optical length increase.

Keyword: Physics, Laser, passive Q- switching , Raman conversion

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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