Fri, 21 Nov 2025 02:41:10 +0000

Researchers introduced nested frequency-phase matching in silicon nitride ring resonator arrays, enabling robust, broadband harmonic generation across chips without fine-tuning. Their method achieves 100% wafer-scale yield, spanning fundamental to 4th harmonics over two optical octaves. This scalable, fabrication-tolerant platform unlocks new paths for integrated nonlinear optics in metrology, quantum tech, and optical computing.