Hybrid-integrated dark-pulse microcombs towards visible light spectrum

2025/05/01 by Long, Jinbao, Yan, Xiaoying, Huang, Sanli +9
#Applied Physics (physics.app-ph) #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Optics (physics.optics)

paper · doi:10.48550/arxiv.2505.00352

Abstract

Leveraging hybrid integration, we demonstrate dark-pulse formation at 780-nm wavelength band in integrated Si₃N₄ microresonators driven by high-power AlGaAs-based chip-scale lasers. The device outputs coherent frequency combs with electronically detectable repetition rates down to 20 GHz, paving a route to efficient and compact atom-chip interfaces for spectroscopy, metrology and sensing.

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