Concept for a transmissive, large angle, light steering device with high efficiency

Hsien Hui Cheng; Achintya K. Bhowmik; Philip J. Bos

doi:10.1364/OL.40.002080

Optics Letters
Vol. 40,
Issue 9,
pp. 2080-2083
(2015)
•https://doi.org/10.1364/OL.40.002080

Concept for a transmissive, large angle, light steering device with high efficiency

Hsien Hui Cheng, Achintya K. Bhowmik, and Philip J. Bos

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Hsien Hui Cheng, Achintya K. Bhowmik, and Philip J. Bos, "Concept for a transmissive, large angle, light steering device with high efficiency," Opt. Lett. 40, 2080-2083 (2015)

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Abstract

A device concept is presented to allow very large angle deflection of light passing through a transmissive device. Deflection of light, switchable between angles larger than $\pm 60 \deg$ , is shown to be possible with efficiencies approaching 100%.

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(a) Optimized On-Axis Twist Angle $ϕ_{twist} (°)$
$Δ n / Deflection Angle$	−20°	−40°	−60°	−80°
0.106	60	120	250	320
0.179	55	75	160	180
0.3	40	60	85	130
(b) Optimized value of $Δ n d$
$Δ n / Deflection Angle$	−20°	−40°	−60°	−80°
0.106	$0.60 λ_{0}$	$0.425 λ_{0}$	$0.525 λ_{0}$	$0.50 λ_{0}$
0.179	$0.625 λ_{0}$	$0.50 λ_{0}$	$0.55 λ_{0}$	$0.50 λ_{0}$
0.3	$0.70 λ_{0}$	$0.60 λ_{0}$	$0.50 λ_{0}$	$0.50 λ_{0}$

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Optics Letters