Effects of material parameter on interaction length to occur optical phase conjugation via stimulated Brillouin scattering in semiconductors

In the present formulation using hydrodynamic model and coupled mode scheme of plasmas the interaction length necessary to achieve optical phase conjugation is obtained from steady-state Brillouin gain coefficient for a semiconductor crystal. The analytical investigation of steady-state gain of stimulated Brillouin scattering (SBS) is made by assuming that the SBS is resulted from the nonlinear interaction of an intense electromagnetic wave with acoustic perturbation internally generated due to acousto-optic property of the semiconductor crystal. Numerical estimates confirm that when cyclotron frequency is tuned with pump frequency, interaction length is found to be nearly 104 m smaller than that obtained in absence of magnetic filed. Pump intensity and free carrier concentration both helpful in reducing the required interaction length. -- Highlights: ► OPC via SBS is obtained in doped semiconductors. ► Favourable interaction length to occur OPC is obtained. ► Magnetic field reduces interaction length. ► Minimum interaction length is obtained in dispersionless acoustic regime.