Goos–Hänchen shift for higher-order Hermite–Gaussian beams |
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Authors: | DHEERAJ GOLLA S DUTTA GUPTA |
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Institution: | 1.Indian Institute of Technology Kharagpur,Kharagpur,India;2.School of Physics,University of Hyderabad,Hyderabad,India |
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Abstract: | We study the reflection of a Hermite–Gaussian beam at an interface between two dielectric media. We show that unlike Laguerre–Gaussian
beams, Hermite–Gaussian beams undergo no significant distortion upon reflection. We report Goos–H?nchen shift for all the
spots of a higher-order Hermite–Gaussian beam near the critical angle. The shift is shown to be insignificant away from the
critical angle. The calculations are carried out neglecting the longitudinal component along the direction of propagation
for a spatially finite, s-polarized, full 3D vector beam. We briefly discuss the difficulties associated with the paraxial
approximation pertaining to a vector Gaussian beam. |
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