2024/12/13 by Marko Perestjuk, Perestjuk, Marko, Rémi Armand +23
Chemistry · Engineering · #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Solid State Laser Technologies #Spectroscopy and Laser Applications
paper · pdf · doi:10.48550/arxiv.2412.10269
openalex publication_date 2024/12/13 · openalex created_date 2024/12/17 · openalex updated_date 2026/07/28
We report ring resonators on a silicon germanium on silicon platform\noperating in the mid-infrared wavelength range around 3.5 - 4.6 \μm with\nquality factors reaching up to one million. Advances in fabrication technology\nenable us to demonstrate such high Q-factors, which put silicon germanium at\nthe forefront of mid-infrared integrated photonic platforms. The achievement of\nhigh Q is attested by the observation of degeneracy lifting between clockwise\n(CW) and counter-clockwise (CCW) resonances, as well as optical bistability due\nto an efficient power buildup in the rings.\n