238 citations · 382 across the 4 of their papers we have counts for
5 papers
Wafer-scale fabrication of evacuated alkali vapor cells
Yang Li, Donggyu B. Sohn, Matthew Hummon +2
We describe a process for fabricating a wafer-scale array of alkali metal vapor cells with low residual gas pressure. We show that by etching long, thin channels between the cells…
Electrically driven linear optical isolation through phonon mediated Autler-Townes splitting
Donggyu Sohn, Oğulcan E. Örsel, Gaurav Bahl
Optical isolators are indispensible components in nearly all photonic systems as they help ensure unidirectionality and provide crucial protection from undesirable reflections. Whi…
On-chip optical non-reciprocity through a synthetic Hall effect for photons
Soonwook Kim, Donggyu B. Sohn, Christopher W. Peterson +1
We demonstrate a synthetic Hall effect for light, using an acousto-optically modulated nanophotonic resonator chain. To produce this effect, we simultaneously generate the required…
Direction reconfigurable non-reciprocal acousto-optic modulator on chip
Donggyu B Sohn, Gaurav Bahl
Non-reciprocal components are essential in photonic systems for protecting light sources and for signal routing functions. Acousto-optic methods to produce non-reciprocal devices o…
Breaking time-reversal symmetry with acoustic pumping of nanophotonic circuits
Donggyu B Sohn, Seunghwi Kim, Gaurav Bahl
Achieving non-reciprocal light propagation via stimuli that break time-reversal symmetry, without magneto-optics, remains a major challenge for integrated nanophotonic devices. Rec…