Cavity-enhanced on-chip absorption spectroscopy
US8992836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2009 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Jun 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments of optofluidic devices or methods according to the application can provide on-chip, label-free, massively parallel analysis of analytes. An embodiment of the optofluidic device can comprise a microresonator, a waveguide optically coupled to the microresonator, and a fluidic channel that exposes an analyte to an evanescent field from the microresonator, wherein the light signal has a linewidth lesser than the width of at least one resonance of the light signal propagating in the microresonator. The light signal can be tuned across a spectrum of light wavelengths, wherein the spectrum of wavelengths includes one or more wavelengths defining the at least one resonance in the microresonator. The light transmission through the waveguide over the spectrum of wavelengths of the input light can be detected, and an absorption spectrum of the analyte can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.