• Subhash Chouhan
• Swati Dubey
• S. Ghosh

Hydrodynamic model and coupled mode theory has been used to study operational characteristics of laser-plasma system incorporating relativistic effects. Expressions for nonlinear second order susceptibility and nonlinear absorption coefficient of the medium have been derived. Effects of cyclotron frequency as a function of external applied magnetic field on dispersion coefficient and Threshold pump field intensity have been plotted for relativistic case. Numerical estimations were made for n-InSb crystal duly irradiated by 1.06 μm Nd:YAG laser at 77K. Influence of varying doping concentration is also seen on both the characteristics. Proposed mathematical model successfully examines nonlinear operational characteristics of the medium. It is found that inclusion of magnetic field is favourable for dispersion and threshold characteristics. Reported magnitudes of threshold field intensity and dispersion coefficient are found in well agreement with other investigations in the field. The findings of the paper may be utilized for the construction of optical switch and other optical manipulation devices.

Semiconductor plasma, Parametric Interaction, Nonlinear absorption coefficient

"Nonlinear Dispersion Characteristics of an InSb-Nd:YAG System: Magnetic Field Effects", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.184-188, May-2019, Available :http://www.jetir.org/papers/JETIR1905V82.pdf

"Nonlinear Dispersion Characteristics of an InSb-Nd:YAG System: Magnetic Field Effects", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp184-188, May-2019, Available at : http://www.jetir.org/papers/JETIR1905V82.pdf