An interpretation and guide to single-pass beam shaping methods using SLMs and DMDs

Stilgoe, Alexander B., Kashchuk, Anatolii V., Preece, Daryl and Rubinsztein-Dunlop, Halina (2016) An interpretation and guide to single-pass beam shaping methods using SLMs and DMDs. Journal of Optics, 18 6: . doi:10.1088/2040-8978/18/6/065609


Author Stilgoe, Alexander B.
Kashchuk, Anatolii V.
Preece, Daryl
Rubinsztein-Dunlop, Halina
Title An interpretation and guide to single-pass beam shaping methods using SLMs and DMDs
Journal name Journal of Optics   Check publisher's open access policy
ISSN 2040-8978
2040-8986
Publication date 2016-06
Year available 2016
Sub-type Article (original research)
DOI 10.1088/2040-8978/18/6/065609
Open Access Status Not Open Access
Volume 18
Issue 6
Total pages 12
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Collection year 2017
Language eng
Abstract Exquisite manipulations of light can be performed with devices such as spatial light modulators (SLMs) and digital micromirror devices (DMDs). These devices can be used to simulate transverse paraxial beam wavefunction eigenstates such as the Hermite-Laguerre-Gaussian mode families. We investigate several beam shaping methods in terms of the wavefunctions of scattered light. Our analysis of the efficiency, behaviour and limitations of beam shaping methods is applied to both theory and experiment. The deviation from the ideal output from a valid beam shaping method is shown to be due to experimental factors which are not necessarily being accounted for. Incident beam mode shape, aberration, and the amplitude/phase transfer functions of the DMD and SLM impact the distribution of scattered light and hence the effectiveness and efficiency of a beam shaping method. Correcting for these particular details of the optical system accounts for all differences in efficiency and mode fidelity between experiment and theory. We explicitly show the impact of experimental parameter variations so that these problems may be diagnosed and corrected in an experimental beam shaping apparatus. We show that several beam shaping methods can be used for the production of beam modes in a single pass and the choice is based on the particular experimental conditions.
Keyword Beam profile
Wave propagation
Transmission
Optical trapping
Beam shaping
Aberration
Scattering
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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