Detecting lateral misalignment of Laguerre Gaussian beams via spatial mode projection

  • Niña Angelica Fabroa Zambale National Institute of Physics, University of the Philippines Diliman
  • Nathaniel Hermosa National Institute of Physics, University of the Philippines Diliman

Abstract

We propose a technique to detect lateral misalignment of Laguerre Gaussian(LG) beams via spatial mode projection. We analytically solve the intensity of the misaligned beam projected on two different basis beams--a Gaussian beam and an aligned LG beam with the same topological charge l. We verify the analytical calculations by doing numerical simulations. Results show that the probability amplitudes follow a quadratic behavior for the Gaussian basis beam and a quartic trend for the LG basis beam with respect to increasing lateral misalignment. This study can be applied in determining minute beam displacements such as beamshift measurements.

Published
2018-05-29
How to Cite
[1]
N. A. Zambale and N. Hermosa. Detecting lateral misalignment of Laguerre Gaussian beams via spatial mode projection, Proceedings of the Samahang Pisika ng Pilipinas 36, SPP-2018-PA-39 (2018). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2018-PA-39.
Section
Poster Session A (Materials Science, Instrumentation, and Photonics)