1996
DOI: 10.1117/1.601095
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Measurement and modeling of the angular dispersion in liquid crystal broadband beam steering devices

Abstract: Liquid crystal beam steering devices behave like blazed diffraction gratings: the design wavelength can be nicely diffracted into a single order. Unfortunately, the grating nature of these devices causes strong angular dispersion of the transmitted light when the incident beam contains a broad spectrum of wavelengths. We characterized the behavior of a liquid crystal beam steerer for broadband illumination. We report experimental measurements of the impulse response of the beam steering device as a function of… Show more

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Cited by 16 publications
(8 citation statements)
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“…Beams Trying to steer broadband sensors was first pursued in the late 1980s to early 1990s, not long after starting the efforts to steer narrowband light nonmechanically. 6,[81][82][83][84] One of the early useful insights was that larger resets are somewhat more broadband, even though it was not proven in a paper until 2005. Reference 7 shows in theory and experiment the effect of larger resets on the broadband nature of the beam steerer.…”
Section: Nonmechanical Steering Of Broadband Eomentioning
confidence: 99%
“…Beams Trying to steer broadband sensors was first pursued in the late 1980s to early 1990s, not long after starting the efforts to steer narrowband light nonmechanically. 6,[81][82][83][84] One of the early useful insights was that larger resets are somewhat more broadband, even though it was not proven in a paper until 2005. Reference 7 shows in theory and experiment the effect of larger resets on the broadband nature of the beam steerer.…”
Section: Nonmechanical Steering Of Broadband Eomentioning
confidence: 99%
“…The fringing-effect of the LCOS phase profiles, including the binary phase profile [8] and the blazed phase profile [9], has been studied previously. In both cases, there are various computational models and tools to simulate the phase profile across the flyback region [10].…”
Section: Introductionmentioning
confidence: 99%
“…A strong diffraction effect can be observed in these devices, as the pixel size is very small; the diffraction effi-ciency can be low if the phase profile of these devices is aberrated from the ideal for any of a number of reasons. [5][6][7] One unavoidable limitation on an LC device is that the orientation of the LC cannot change drastically at resets where the phase shift goes from 0 to 2. This will happen in regions of flyback and lower the diffraction efficiency.…”
Section: Introductionmentioning
confidence: 99%