Communications of the ACM
Researchers Devise Novel Laser Steering for Autonomous Cars
Researchers at Purdue and Stanford universities have found a novel laser light sensing technology that is orders of magnitude more sensitive and faster than leading-edge sensor devices.
Credit: Purdue Research Foundation
Purdue University and Stanford University researchers say they have discovered a novel laser light sensing technology that is more robust and less expensive than conventional systems.
They note the innovation is orders of magnitude faster than other laser steering devices that use phased antenna-array technology.
The Purdue-Stanford technology is based on light-matter interaction between a silicon-based metasurface and short light pulses. This type of beam-steering device can scan a large angle of view in nanoseconds or picoseconds, compared with the microseconds current systems take.
The team says the new system is chip-compatible technology that does not require additional sources of energy.
Stanford's Amr Shaltout says each of the structures in the new system emit slightly different frequencies, meaning there is no need to address each individual antenna continuously and consume power during that process.
From Purdue University News
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