• Goos–Hänchen shift for higher-order Hermite–Gaussian beams

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      https://www.ias.ac.in/article/fulltext/pram/076/04/0603-0612

    • Keywords

       

      Goos–Hänchen shift; finite beams; total internal reflection; paraxial approximation.

    • 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–Hänchen shift for all the spots of a higherorder 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.

    • Author Affiliations

       

      Dheeraj Golla1 S Dutta Gupta2

      1. Indian Institute of Technology Kharagpur, Kharagpur 721302, India
      2. School of Physics, University of Hyderabad, Hyderabad 500 046, India
    • Dates

       
  • Pramana – Journal of Physics | News

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