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Spatial light modulator

About: Spatial light modulator is a research topic. Over the lifetime, 9043 publications have been published within this topic receiving 130143 citations.


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Patent
Tetsuro Yamazaki1, Hidehito Iisaka1
09 Jun 2004
TL;DR: In this paper, the authors proposed a method of driving a spatial light modulator, comprising the step for generating a subframe pulse signal for a first colored light R1 through R8, B1 through B8, G1 through G8 during at least one frame of the image, and the steps for driving a plurality of movable mirror elements in accordance with the sub-frame pulse signals for the respective colored light arranged in the step of arranging the subframe signals, the movable mirrors being alternatively moved at least to a first reflecting position and a second reflecting position.
Abstract: The invention seeks to reduce the color break-up and to provide high quality projection images A method of driving a spatial light modulator, comprising the step for generating a subframe pulse signal for a first colored light R1 through R8, B1 through B8, the step for generating a sub-frame pulse signal for a second colored light G1 through G8, the step for arranging the sub-frame pulse signals for the respective colored light so that at least three of the sub-frame pulse signals for the first colored light R1 through R8, B1 through B8 adjoin either one of the sub-frame pulse signals for the second colored light G1 through G8 during at least one frame of the image, and the step for driving a plurality of movable mirror elements in accordance with the sub-frame pulse signals for the respective colored light arranged in the step of arranging the sub-frame pulse signals, the movable mirror elements being alternatively moved at least to a first reflecting position and a second reflecting position

45 citations

Journal ArticleDOI
TL;DR: It is shown that two-photon polymerization allows for direct fabrication of micro-optics components on the fiber end, resulting in an increase of the numerical aperture to a value that is close to 1.0, and optically scan a submicrometer spot over an extended region, facing the opposite fiber end.
Abstract: The use of individual multimode optical fibers in endoscopy applications has the potential to provide highly miniaturized and noninvasive probes for microscopy and optical micromanipulation. A few different strategies have been proposed recently, but they all suffer from intrinsically low resolution related to the low numerical aperture of multimode fibers. Here, we show that two-photon polymerization allows for direct fabrication of micro-optics components on the fiber end, resulting in an increase of the numerical aperture to a value that is close to 1. Coupling light into the fiber through a spatial light modulator, we were able to optically scan a submicrometer spot (300 nm FWHM) over an extended region, facing the opposite fiber end. Fluorescence imaging with improved resolution is also demonstrated.

45 citations

Journal ArticleDOI
TL;DR: This work develops a non-iterative direct space beam shaping method to generate Bessel beams with high energy throughput from direct space with a single phase-only spatial light modulator for non-uniform input beams.
Abstract: Arbitrary shaping of the on-axis intensity of Bessel beams requires spatial modulation of both amplitude and phase. We develop a non-iterative direct space beam shaping method to generate Bessel beams with high energy throughput from direct space with a single phase-only spatial light modulator. For this purpose, we generalize the approach of Bolduc et al. to non-uniform input beams. We point out the physical limitations imposed on the on-axis intensity profile for unidirectional beams. Analytical, numerical and experimental results are provided.

45 citations

Journal ArticleDOI
TL;DR: The functionality of the system is demonstrated by controlling the rotation and orientation of birefringent vaterite crystals within holographic optical tweezers by defining the phase difference between the beams with the spatial light modulator.
Abstract: We present a system which uses a single spatial light modulator to control the spin angular momentum of multiple optical traps. These traps may be independently controlled both in terms of spatial location and in terms of their spin angular momentum content. The system relies on a spatial light modulator used in a "split-screen" configuration to generate beams of orthogonal polarisation states which are subsequently combined at a polarising beam splitter. Defining the phase difference between the beams with the spatial light modulator enables control of the polarisation state of the light. We demonstrate the functionality of the system by controlling the rotation and orientation of birefringent vaterite crystals within holographic optical tweezers.

45 citations

Journal ArticleDOI
KyeoReh Lee1, Junsung Lee1, Jung-Hoon Park1, Ji-Ho Park1, YongKeun Park1 
TL;DR: This work demonstrates the realization of a one-wave optical phase conjugation mirror using a spatial light modulator and demonstrates high throughput full-field light delivery through highly scattering biological tissue and multimode fibers, even for quantum dot fluorescence.
Abstract: Rewinding the arrow of time via phase conjugation is an intriguing phenomenon made possible by the wave property of light. Here, we demonstrate the realization of a one-wave optical phase conjugation mirror using a spatial light modulator. An adaptable single-mode filter is created, and a phase-conjugate beam is then prepared by reverse propagation through this filter. Our method is simple, alignment free, and fast while allowing high power throughput in the time-reversed wave, which has not been simultaneously demonstrated before. Using our method, we demonstrate high throughput full-field light delivery through highly scattering biological tissue and multimode fibers, even for quantum dot fluorescence.

45 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023137
2022321
2021266
2020451
2019460
2018452