Welcome to the Ritchie Group website!


We apply optical techniques to explore and exploit the way light interacts with matter. Our experiments include spectroscopic analysis of gases, photolysis, and reaction dynamics, as well as manipulation of colloidal systems using optical tweezers.

Information on MEDIXHALE (Medical Diagnostics Based on Exaled-Air Analysis with Laser Absorption Spectroscopy).


A warm welcome to our four new Part II students!

Dr. Luca Ciaffoni gave a talk at the International Association of Breath Research Summit in Vienna.

Congratulations to Nicholas Smith for winning a prize for one of the best Part II theses this year!


Recent Publications

Cavity-enhanced near-infrared laser absorption spectrometer for the measurement of acetonitrile in breath Michele Gianella and Grant A.D. Ritchie, Analytical Chemistry (2015) DOI: 10.1021/acs.analchem.5b01341

RF noise induced laser perturbation for improving the performance of non-resonant cavity enhanced absorption spectroscopy L. Ciaffoni, J. Couper, G. Hancock, R. Peverall, P. A. Robbins, G.A.D. Ritchie, Opt. Exp. (2014) DOI:10.1364/OE.22.017030