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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/235648
- Title
- Effect of refractive index mismatch aberration in arsenic trisulfide
- Author(s)
- Cumming, Benjamin P.; Debbarma, Sukanta; Luther-Davies, Barry; Gu, Min
- 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 (As2S3) 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.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics. Centre for Ultrahigh-bandwidth Devices for Optical Systems
- Source
- Applied Physics B: Lasers and Optics, Vol. 109, no. 2 (Nov 2012), pp. 227-232
- Publication year
- 2012
- FOR Code(s)
- 0205 Optical Physics; 0906 Electrical and Electronic Engineering; 0913 Mechanical Engineering
- Keyword(s)
- Arsenic trisulfide; Axial response; Refractive index; Refractive index mismatch; Spherical aberration; Thick films
- Publisher
- Springer
- ISSN
- 0946-2171
- Publisher URL
- http://dx.doi.org/10.1007/s00340-012-5180-9
- Copyright
- Copyright © Springer-Verlag 2012.
- Peer reviewed
