Hybrid-integrated dark-pulse microcombs towards visible light spectrum
/ Authors
Jin-Hu Long, Xiaoying Yan, San-Hao Huang, Wei Sun, Hao Tan, Zeying Zhong, Zhenyuan Shang, Jiahao Sun, Baoqi Shi, Chen Shen
and 2 more authors
/ Abstract
Leveraging hybrid integration, we demonstrate dark-pulse formation at 780-nm wavelength band in integrated Si$_3$N$_4$ 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.