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High-resolution aliasing-free optical beam steering
Open accessAbstract
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.
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Citations
Cited by
Long-Range LiDAR and Free-Space Data Communication With High-Performance Optical Phased Arrays
Poulton, C. V., Byrd, M. J., Russo, P., Timurdogan, E., Khandaker, M., Vermeulen, D., & Watts, M. R. (2019) · IEEE Journal of Selected Topics in Quantum Electronics · doi:10.1109/jstqe.2019.2908555 · Cited by 580
A large-scale microelectromechanical-systems-based silicon photonics LiDAR
Zhang, X., Kwon, K., Henriksson, J., Luo, J., & Wu, M. C. (2022) · Nature · doi:10.1038/s41586-022-04415-8 · Cited by 438
Prospects and applications of on-chip lasers
Zhou, Z., Ou, X., Fang, Y., Alkhazraji, E., Xu, R., Wan, Y., & Bowers, J. E. (2023) · eLight · doi:10.1186/s43593-022-00027-x · Cited by 319
Coherent LiDAR With an 8,192-Element Optical Phased Array and Driving Laser
Poulton, C. V., Byrd, M. J., Russo, P., Moss, B., Shatrovoy, O., Khandaker, M., & Watts, M. R. (2022) · IEEE Journal of Selected Topics in Quantum Electronics · doi:10.1109/jstqe.2022.3187707 · Cited by 225
Wafer-scale silicon photonic switches beyond die size limit
Seok, T. J., Kwon, K., Henriksson, J., Luo, J., & Wu, M. C. (2019) · Optica · doi:10.1364/optica.6.000490 · Cited by 214
Metadata
- Authors
- Hutchison, D. N., Sun, J., Doylend, J. K., Kumar, R., Heck, J., Kim, W., Phare, C. T., Feshali, A., & Rong, H.
- Venue
- Optica
- Publisher
- Optica Publishing Group
- Published
- 2016-08-05
- Volume
- 3
- Issue
- 8
- Pages
- 887
- ISSN
- 2334-2536 (ISSN-L)
- OpenAlex
- W2481781603
- Cited by
- 534
- References
- 0
- FWCI
- 19.67
- Type
- journal article
- Language
- en
- Open access
- gold
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- Hutchison, D. N., Sun, J., Doylend, J. K., Kumar, R., Heck, J., Kim, W., Phare, C. T., Feshali, A., & Rong, H. (2016). High-resolution aliasing-free optical beam steering. Optica. https://doi.org/10.1364/optica.3.000887
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