High-resolution aliasing-free optical beam steering

By D. Hutchison, Jie Sun, J. Doylend, Ranjeet Kumar, J. Heck, Kim Woosung, C. Phare, Avi Feshali, Haisheng Rong. 2016

405 citations recorded by the source corpus.

Many applications, including laser (LIDAR) mapping, free-space optical communications, and spatially resolved optical sensors, demand compact, robust solutions to steering an optical beam. Fine target addressability (high steering resolution) in these systems requires simultaneously achieving a wide steering angle and a small beam divergence, but this is difficult due to the fundamental trade-offs between resolution and steering range. So far, to our knowledge, chip-based two-axis optical phased arrays have achieved a resolution of no more than 23 resolvable spots in the phased-array axis. Here we report, using non-uniform emitter spacing on a large-scale emitter array, a dramatically higher-performance two-axis steerable optical phased array fabricated in a 300 mm CMOS facility with over 500 resolvable spots and 80° steering in the phased-array axis (measurement limited) and a record small divergence in both axes (0.14°). Including the demonstrated steering range in the other (wavelength-controlled) axis, this amounts to two-dimensional beam steering to more than 60,000 resolvable points.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/a2b8f9e41b7a57662fd3f6dbb7e72e524055b683

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

  1. Christopher V. Poulton
  2. Matthew J. Byrd
  3. D. Vermeulen
  4. P. Russo
  5. Murshed Khandaker
  6. M. Watts
  7. Erman Timurdogan
  8. Joshua W. Silverstone

Citations in the corpus