Cornell University

Yoshitomo Okawachi

Michal Lipson

Alexander Gaeta

Jaime Cardenas

Austin G Griffith

Romy Fain

Ryan K W Lau

Adrea R Johnson

Techniques, systems, and devices are disclosed to provide on-chip integrated gas sensor based on photonic sensing. For example, a sensing device is provided to include an optical comb generator that produces an optical comb of different optical comb frequencies in a mid-infrared (MIR) spectral range to interact with a sample under detection, the optical comb generator including a substrate, an optical resonator formed on the substrate and an optical waveguide formed on the substrate and coupled to the optical resonator, and an optical detector that detects light from the sample at the different optical comb frequencies.

On-chip integrated gas sensor based on photonic sensing

The disclosed technology, in one aspect, includes an optical comb generator device which includes a laser cavity that includes an optical gain material to provide an optical gain and an optical path to allow laser light to circulate inside the laser cavity; and a high-Q resonator optically coupled in the optical path inside the laser cavity so that the laser light generated and sustained inside the laser cavity is in optical resonance with the high-Q resonator to cause laser light stored inside the high-Q resonator to have an optical intensity above a four wave mixing threshold of the high-Q resonator to cause parametric four wave mixing so as to produce an optical comb of different optical frequencies.

Parametric comb generation via nonlinear wave mixing in high-Q optical resonator coupled to built-in laser resonator

Growing community of inventors

Lansing, NY, United States of America

Yoshitomo Okawachi