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Shaping Laguerre–Gaussian laser modes with binary gratings using a digital micromirror device |
Optics Letters, Vol. 37, Issue 23, pp. 4826-4828 (2012)
http://dx.doi.org/10.1364/OL.37.004826
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Abstract
Laguerre–Gaussian (LG) beams are used in many research fields, including microscopy, laser cavity modes, and optical tweezing. We developed a holographic method to generate pure LG modes (amplitude and phase) with a binary amplitude-only digital micromirror device (DMD) as an alternative to the commonly used phase-only spatial light modulator. The advantages of such a DMD include very high frame rates, low cost, and high damage thresholds. We have shown that the propagating shaped beams are self-similar and their phase fronts are of helical shape as demanded. We estimate the purity of the resultant beams to be above 94%.
© 2012 Optical Society of America
OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(140.3300) Lasers and laser optics : Laser beam shaping
(090.1995) Holography : Digital holography
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: September 19, 2012
Revised Manuscript: October 9, 2012
Manuscript Accepted: October 9, 2012
Published: November 16, 2012
Virtual Issues
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Vitaly Lerner, David Shwa, Yehonathan Drori, and Nadav Katz, "Shaping Laguerre–Gaussian laser modes with binary gratings using a digital micromirror device," Opt. Lett. 37, 4826-4828 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-23-4826
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