Multi-timescale frequency-phase matching for high-yield nonlinear photonics

• 成果类型: Article
• 署名作者: Mehrabad, Mahmoud Jalali; Xu, Lida; Moille, Gregory; Flower, Christopher J.; Sarkar, Supratik; Padhye, Apurva; Ou, Shao-Chien; Suarez-Forero, Daniel G.; Ghafariasl, Mahdi; Chembo, Yanne; Srinivasan, Kartik; Hafezi, Mohammad
• 署名单位: University System of Maryland; University of Maryland College Park; National Institute of Standards & Technology (NIST) - USA; University System of Maryland; University of Maryland College Park
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adu6368
• 发表日期: 2025-11-06
• 页码: 612-616
• 关键词: generation

摘要

Integrated nonlinear photonics struggles to deliver wafer-scale functional device yields: Nanometer-level fabrication variations compromise the strict frequency-phase matching mandated by energy- and momentum-conserving nonlinear processes. We introduce nested frequency-phase matching, a passive scheme that relaxes these constraints, and implement it in a two-timescale lattice of commercially available silicon nitride (SiN) coupled ring resonators for harmonic generation. The nested lattice simultaneously generates ultrabroad bandwidth light in the fundamental-, second-, third-, and fourth-harmonic bands and achieves 100% multifunctional wafer-scale device yield, all passively and without geometry fine-tuning. Distinct spatial and spectral signatures confirm the predicted relaxation of frequency-phase matching, establishing a scalable route for chip-scale nonlinear optics. Our approach provides possibilities for integrated frequency conversion and synchronization, self-referencing, precision metrology, squeezed-light sources, and nonlinear optical computing.