TY - JOUR
T1 - GPC light shaper: static and dynamic experimental demonstrations.
AU - Bañas, Andrew Rafael
AU - Kopylov, Oleksii
AU - Villangca, Mark Jayson
AU - Palima, Darwin
AU - Glückstad, Jesper
N1 - This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-20-23759. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
PY - 2014
Y1 - 2014
N2 - Generalized Phase Contrast (GPC) is an efficient method for
generating speckle-free contiguous optical distributions useful in diverse
applications such as static beam shaping, optical manipulation and,
recently, for excitation in two-photon optogenetics. GPC allows efficient
utilization of typical Gaussian lasers in such applications using binary-only
phase modulation. In this work, we experimentally verify previously
derived conditions for photon-efficient light shaping with GPC [Opt.
Express 22(5), 5299 (2014)]. We demonstrate a compact implementation of
GPC for creating practical illumination shapes that can find use in lightefficient
industrial or commercial applications. Using a dynamic spatial
light modulator, we also show simple and efficient beam shaping of
reconfigurable shapes geared towards materials processing, biophotonics
research and other contemporary applications. Our experiments give ~80%
efficiency, ~3x intensity gain, and ~90% energy savings which are in good
agreement with previous theoretical estimations.
AB - Generalized Phase Contrast (GPC) is an efficient method for
generating speckle-free contiguous optical distributions useful in diverse
applications such as static beam shaping, optical manipulation and,
recently, for excitation in two-photon optogenetics. GPC allows efficient
utilization of typical Gaussian lasers in such applications using binary-only
phase modulation. In this work, we experimentally verify previously
derived conditions for photon-efficient light shaping with GPC [Opt.
Express 22(5), 5299 (2014)]. We demonstrate a compact implementation of
GPC for creating practical illumination shapes that can find use in lightefficient
industrial or commercial applications. Using a dynamic spatial
light modulator, we also show simple and efficient beam shaping of
reconfigurable shapes geared towards materials processing, biophotonics
research and other contemporary applications. Our experiments give ~80%
efficiency, ~3x intensity gain, and ~90% energy savings which are in good
agreement with previous theoretical estimations.
U2 - 10.1364/OE.22.023759
DO - 10.1364/OE.22.023759
M3 - Journal article
VL - 22
SP - 23759
EP - 23769
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 20
ER -