Applied Physics B

, Volume 109, Issue 2, pp 227–232

Effect of refractive index mismatch aberration in arsenic trisulfide

  • Benjamin P. Cumming
  • Sukanta Debbarma
  • Barry Luther-Davies
  • Min Gu
Article

DOI: 10.1007/s00340-012-5180-9

Cite this article as:
Cumming, B.P., Debbarma, S., Luther-Davies, B. et al. Appl. Phys. B (2012) 109: 227. doi:10.1007/s00340-012-5180-9

Abstract

We demonstrate compensation for the spherical aberration due to the refractive index mismatch that occurs when a laser beam is focused into a thick arsenic trisulfide (As\(_2\)S\(_3\)) film with a high numerical aperture objective. The effects of the aberration at different focal depths on the point spread function have been calculated numerically and the axial response method shown to be a useful measure for compensating the spherical aberration. We show that with the addition of adaptive optics based on a spatial light modulator, the aberration can be significantly reduced, resulting in an increase in peak intensity by a factor of 2.4 and a decrease in axial elongation by a factor of 2.2.

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Benjamin P. Cumming
    • 1
  • Sukanta Debbarma
    • 2
  • Barry Luther-Davies
    • 2
  • Min Gu
    • 1
  1. 1.Centre for Micro-Photonics, Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Faculty of Engineering and Industrial SciencesSwinburne University of TechnologyHawthornAustralia
  2. 2.Laser Physics Centre, Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), Research School of Physical Sciences and EngineeringAustralian National UniversityCanberraAustralia