2021/05/31 by K. Floettmann, Klaus Floettmann · 5 citations
Engineering · Mathematics · Physics and Astronomy · #Gauss #Hermite polynomials #Laser-Matter Interactions and Applications #Lens (geology) #Mathematical analysis #Mathematics #Observable #Optics #Orbital Angular Momentum in Optics #Photonic Crystal and Fiber Optics #Physics #Quantum mechanics #Rayleigh scattering #Superposition principle #Thin lens #physics.optics
paper · pdf · doi:10.1016/j.optcom.2021.127537
published in Optics Communications 505, 127537 (Elsevier BV)
arxiv created 2021/05/31 · openalex publication_date 2021/10/13 · openalex created_date 2021/10/25 · arxiv updated 2021/11/10 · openalex updated_date 2026/07/31
The coherent superposition of orthogonal modes can result in phase dependent transverse offsets, shifts of the focus position, variations of the Rayleigh length and a reduction of the beam quality factor of the coherent sum of modes in comparison to the incoherent sum. Relations for first and second order moments, the beam quality and the Rayleigh length for the superposition of Hermite–Gauss modes are derived. The Courant–Snyder formalism, which was originally developed in the context of charged particle optics, is applied to propagate an arbitrary coherent sum of orthogonal modes through a lens system. Relations of generating and observable optical functions are highlighted. In the last part of the report the elegant Hermite–Gauss solution is interpreted in terms of generating and observable functions and the solution is decomposed into a sum of standard Hermite–Gauss modes.