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Schematics of (a) our beam steering device (groove periodicity , groove and slit width of , and groove depth ) and (b) the experimental setup for determination of the angle-resolved transmission of beamed light.
The experimental (contour plot) and predicted (dashed-line) angular distribution of the transmitted beam as a function of wavelength. The gap in the experimental data represents the portion of the spectrum not accessible with our lasers.
Two-dimensional profiles of transmitted beams for five wavelengths between 9.4 and [(a)–(e)]. The narrowest beam width along the -axis is seen for a laser wavelength of .
Normalized intensity vs steering angle for radiation as a function of temperature, showing a shift of 3° as device temperature is increased from 23 to .
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