Cavity-Enhanced Two-Dimensional Spectrometer


Fundamental studies in physics and chemistry include spectroscopy of gas-phase atoms and molecules, developing essential components of quantum mechanics.


This invention is a method to perform passively amplified 2D spectroscopy experiments, and a frequency comb and optical cavities approach was implemented. Implementation is created through coupling multiple frequency combs to higher-order cavity modes, background-free, cavity-enhanced 2D spectroscopy signals are naturally generated via phase cycling. Cavity-enhanced ultrafast transient absorption spectroscopy, the signal to noise is enhanced by a factor proportional to the cavity nesse squared.


The sensitivity will be probably 3-4 orders of magnitude higher than conventional 2D spectrometers and it can use a lower peak power laser which is less expensive.


Clinical - Optics and Photonics

Patent Status

Patent application submitted - Provisional patent

Stage Of Development

US Provisional Filed

Licensing Potential

Development partner - Commercial partner - Licensing

Licensing Status

Available for license. Stony Brook University seeks to develop and commercialize, by an exclusive or non-exclusive license agreement and/or sponsored research, with a company active in the area.

Additional Info

Additional Information: Source: Michael Maasen,, Unsplash License
Patent Information:
Case ID: R8863
For Information, Contact:
Donna Tumminello
Assistant Director
State University of New York at Stony Brook
Thomas Allison
Cavity-enhanced spectroscopy
trace gas detection.
two-dimensional spectroscopy
ultrafast spectroscopy