Applied Physics B

, Volume 109, Issue 2, pp 227–232

Effect of refractive index mismatch aberration in arsenic trisulfide

Authors

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