High speed switching between arbitrary spatial light profiles

High speed switching between arbitrary spatial light profiles

Complex images, inscribed into the spatial profile of a laser beam or even a single photon, offer a highly efficient method of data encoding. Here we present a prototype system which can quickly modulate between arbitrary images. We display an array of holograms, each defined by its phase and intens...

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Veröffentlicht in:Optics express 2014-06, Vol.22 (11), p.12845-12852
Hauptverfasser: Radwell, N, Brickus, D, Clark, T W, Franke-Arnold, S
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container_issue 11
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container_title Optics express
container_volume 22
creator Radwell, N
Brickus, D
Clark, T W
Franke-Arnold, S
description Complex images, inscribed into the spatial profile of a laser beam or even a single photon, offer a highly efficient method of data encoding. Here we present a prototype system which can quickly modulate between arbitrary images. We display an array of holograms, each defined by its phase and intensity profile, on a spatial light modulator. The input beam is then steered by an acousto-optic modulator to one of these holograms, where it is converted into the desired light mode. We demonstrate switching between characters within three separate alphabets at a switching rate of up to10 kHz. This rate is limited by our detection system, and we anticipate that the system is capable of far higher rates. Furthermore our system is not limited in efficiency by channel number, making it ideal for quantum communication applications.
doi_str_mv 10.1364/OE.22.012845
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title High speed switching between arbitrary spatial light profiles
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