Frequency doubling on a metallic surface by Hermite–Cosh–Gaussian laser beam

The phenomenon of frequency doubling at the interface of Ag-InSb and Al-InSb by self-focused Hermite–Cosh–Gaussian laser beam has been studied for two different mode-indices in the Kretschmann configuration. Surface plasma wave generated by the interaction of the laser with metal at metal–glass interface applies ponderomotive force on the electrons of semiconductor leading to harmonic generation at metal–semiconductor interface. Considering paraxial approximations, it has been found that amplitude enhancement is more in Ag-InSb. Our work shows that metal–semiconductor interface could be a good option for harmonic generation which further can be used for medical purposes.