Journal
OPTICS EXPRESS
Volume 16, Issue 19, Pages 14617-14628Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.014617
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- DARPA Systems Microsystems Technology Office
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We introduce a 2D beamscanner which is controlled by wavelength tuning. Two passive dispersive devices are aligned orthogonally to deflect the optical beam in two dimensions. We provide a proof of principle demonstration by combining an arrayed waveguide grating with a free space optical grating and using various input sources to characterize the beamscanner. This achieved a discrete 10.3 degrees by 11 degrees output field of view with attainable angles existing on an 8 by 6 grid of directions. The entire range was reached by scanning over a 40 nm wavelength range. We also analyze an improved system combining a virtually imaged phased array with a diffraction grating. This device is much more compact and produces a continuous output scan in one direction while being discrete in the other. (C) 2008 Optical Society of America.
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