Steering a laser usually means moving a mirror or gimbal — mechanical, slow, and a wear point. US11962346B2, granted to Raytheon Company on April 16, 2024, does it with no moving parts, claiming a "photonic integrated circuit (PIC)-based optical phased array with integrated gyroscopic sensor."
The CPC is optical-comms and optics: H04B 10/1129 and 10/1127 (free-space optical transmission, beam acquisition/tracking) and G02B 6/359 (optical waveguide switching). The waveguide code is the photonic-chip giveaway — the beam steering happens in integrated optics, not bulk hardware.
The mechanism mirrors RF phased arrays, in light. Just as an RF array steers a radio beam by controlling the phase across many elements, an optical phased array steers a laser by controlling the phase across many waveguide emitters on a photonic chip. Integrating the array onto a PIC makes it compact, rugged, and fast. The added gyroscopic sensor provides inertial reference to stabilize and point the beam — critical when the platform is moving.
For laser communication and sensing, this is enabling miniaturization: a beam-steering subsystem that can be manufactured like a chip rather than assembled like an instrument. The defense-tech relevance is obvious — directed energy, precision sensing, and secure optical links all want exactly this kind of compact, no-moving-parts pointing.
A security-aware note this desk always makes: Raytheon's public patent record shows the commercializable and dual-use edge of its work; the most sensitive directed-energy and sensing applications live in classified programs the public record does not reach. This grant claims a specific PIC-based optical-phased-array-plus-gyro implementation, not optical phased arrays in general. It is a clear window into where photonics is heading — and a reminder that what is patented is only the part the company is willing to show.