Binary Synthetic Holograms

Lee, Wai-Hon

doi:10.1364/ao.13.001677

Cited by 249 publications

(85 citation statements)

References 6 publications

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“…The field detectors use off-axis holography with two orthogonally polarized reference beams to retrieve the vector light field E(x , y) from a single camera image [35,36]. The field shapers use a digital micromirror device (DMD, Vialux V-9600) and Lee holography [37] to shape the vector light field. PCM1 and PCM2 are imaged to the sample surfaces with a calculated magnification of 286x, using f = 750 mm tube lenses and 1.4 NA 63x (MO1) and 0.95 NA 63x (MO2) microscope objectives, respectively.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Frequency width of open channels in multiple scattering media

Bosch¹,

Goorden²,

Mosk³

2016

Opt. Express

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We report optical measurements of the spectral width of open transmission channels in a three-dimensional diffusive medium. The light transmission through a sample is enhanced by efficiently coupling to open transmission channels using repeated digital optical phase conjugation. The spectral properties are investigated by enhancing the transmission, fixing the incident wavefront and scanning the wavelength of the laser. We measure the transmitted field to extract the field correlation function and the enhancement of the total transmission. We find that optimizing the total transmission leads to a significant increase in the frequency width of the field correlation function. Additionally we find that the enhanced transmission persists over an even larger frequency bandwidth. This result shows open channels in the diffusive regime are spectrally much wider than previous measurements in the localized regime suggest.

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Section: Experimental Apparatusmentioning

confidence: 99%

Frequency width of open channels in multiple scattering media

Bosch¹,

Goorden²,

Mosk³

2016

Opt. Express

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“…The generation of the mask was done with a computergenerated interferogram technology 38 that yields a binary mask. The phase term of exp͕Ϫi͓x 2 /(f )͔͖ is the encoded Fresnel zone plate.…”

Section: Methodsmentioning

confidence: 99%

Wigner-related phase spaces for signal processing and their optical implementation

2000

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Phase spaces are different ways to represent signals. Owing to their properties, they are often used for signal compression and recognition with high discrimination abilities. We present several recently introduced Wigner-related sets of representations that have improved signal processing performance, and we introduce an optical implementation. This study deals with the generalized Wigner spaces, the fractional Fourier transform, and the x -p and the r -p representations. The optical implementations are demonstrated and discussed.

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“…As such, a delta function in one plane δ (x − x 0 )δ (y − y 0 ) corresponds to a plane wave in the other plane exp[ik(x x 0 + y y 0 )/ f ], where (x, y) and (x , y ) are pixel coordinates in the DMD and image planes, respectively. It is this duality which allows us to use the DMD to generate arbitrary field profiles in the image plane using one of several algorithms known from digital holography [24,25].…”

Section: Dmd Calibration and Usagementioning

confidence: 99%

Coupling to modes of a near-confocal optical resonator using a digital light modulator

2016

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Digital Micromirror Devices (DMD) provide a robust platform with which to implement digital holography, in principle providing the means to rapidly generate propagating transverse electromagnetic fields with arbitrary mode profiles at visible and IR wavelengths. We use a DMD to probe a Fabry-Pérot cavity in single-mode and near-degenerate confocal configurations. Pumping arbitrary modes of the cavity is possible with excellent specificity by virtue of the spatial overlap between the incident light field and the cavity mode.

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Binary Synthetic Holograms

Abstract: The positions and width of the fringes in a binary synthetic hologram are determined by the points at (x,y) that satisfy -q/2 Show more

Cited by 249 publications

References 6 publications

Frequency width of open channels in multiple scattering media

Frequency width of open channels in multiple scattering media

Wigner-related phase spaces for signal processing and their optical implementation

Coupling to modes of a near-confocal optical resonator using a digital light modulator

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