Electro-optic steering of a laser beam

Davis, Sumner P.; Rommel, Scott D.; Johnson, Seth; Farca, George; Rebolledo, Neil; Selwyn, Stephanie; Anderson, Michael E.

doi:10.1117/2.1201105.003715

Cited by 14 publications

(15 citation statements)

References 9 publications

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“…In contrast, completely non-mechanical scanning such as programmable spatial light modulators, modulo 2π optical phased arrays, solid state phase arrays, and liquid crystal electrooptic scanners are emerging [1,[4][5][6][7]. These non-moving part devices enable large steering angles and are expected to be highly reliable, and are now actively researched.…”

Section: State Of the Art Beam Steeringmentioning

confidence: 99%

Single chip lidar with discrete beam steering by digital micromirror device

et al. 2017

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“…In contrast, completely non-mechanical scanning such as programmable spatial light modulators, modulo 2π optical phased arrays, solid state phase arrays, and liquid crystal electrooptic scanners are emerging [1,[4][5][6][7]. These non-moving part devices enable large steering angles and are expected to be highly reliable, and are now actively researched.…”

Section: State Of the Art Beam Steeringmentioning

confidence: 99%

Single chip lidar with discrete beam steering by digital micromirror device

et al. 2017

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“…This approach is laser-agnostic and can be combined with other discrete steering devices, like PGs, to greatly expand the field of regard [12]. The operating principle has been demonstrated by bulk transmission through a LC phase prism [13,14] and by utilising tunable LC prisms patterned in waveguides [15][16][17]. The latter method has demonstrated low SWaP (size, weight and power), high throughput ( > 85%), rapid beam redirection (60 kHz) and continuous large-angle 2D steering (50°× 15°) [12].…”

Section: Introductionmentioning

confidence: 99%

Propagating transverse electric and transverse magnetic modes in liquid crystal-clad planar waveguides

et al. 2019

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In a planar dielectric waveguide, weak confinement of a propagating mode in a high index core leads to a measurable evanescent interaction with the cladding. In this work, we study the effect of a reorientable anisotropic cladding on the behaviour of Transverse Electric (TE) and Transverse Magnetic (TM) mode polarisations using a liquid crystal (LC)-clad waveguide architecture. The polarised evanescent field of a guided mode interacts with a voltage-tunable birefringent LC cladding to deflect an out-coupled beam. Experimental measurements are coupled with a theoretical framework and show good consistency with simulation results. We isolate the effect of mode confinement by changing the thickness of the high index core. Interactions between the LC index ellipsoid and the mode polarisation are probed by changing the initial alignment of the LC. Finally, we examine the difference in deflection between TE and TM modes, which incorporates both a change in mode confinement and a difference in LC index components.

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“…In contrast, completely non-mechanical scanning such as programmable spatial light modulators, modulo 2π optical phased arrays, solid state phase arrays, and liquid crystal electro-optic scanners are emerging, and are now actively researched. 2,[4][5][6][7] In terms of small component inertia, Micro-Electro-Mechanical Systems (MEMS) are promising due to their small size and weight, low production cost, high energy efficiency, and applicability to wide wavelength ranges. These MEMS devices include single resonant mirrors and shifting lenslet arrays.…”

Section: Introductionmentioning

confidence: 99%