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In the field of lidar, where speed is often valued above other variables, a team from Yokohama National University is using “slow light” to develop compact, easy-to-use, 3D sensors with nonmechanical beam-steering capabilities.
“Currently existing optical beam-steering devices all use some kind of mechanics, such as rotary mirrors,” professor Toshihiko Baba said. “This makes the device large and heavy, with limited overall speed and a high cost.” Optical phased arrays can be used to direct the optical beam without mechanical parts, but this approach requires a large number of optical antennas and each antenna needs to be calibrated.
For its nonmechanical approach to beam-steering, the…READ MORE