Photodetector feedback modulates optical intensity and phase to perform low-power multiplication with lower latency than microprocessor-based processing.
Photonic crystal surface-emitting laser arrays enable coherent beam locking without external injection sources.
A planar micro-nano optical element uses wavelength-controlled resonance to perform multi-channel image analog computing.
Digital signal processing algorithms correct pixel misalignment between spatial light modulators, resolving high alignment tolerance requirements.