Cavity-enhanced rotational Raman scattering in gases using a 20mW near-infrared fiber laser. Academic Article

abstract

• A novel cavity-enhanced laser diagnostic has been developed to perform point measurements of spontaneous rotational Raman scattering. A narrow linewidth fiber laser source (1064 nm) is frequency locked to a high-finesse cavity containing the sample gas. Intracavity powers of 22 W are generated from 3.7 mW of incident laser power, corresponding to a buildup factor of 5900. A triple monochromator and a photomultiplier tube in counting mode are used to disperse and measure the scattering spectra. The system is demonstrated with rotational Raman spectra of nitrogen, oxygen, and carbon dioxide at atmospheric pressure. The approach will allow temporally and spatially resolved Raman measurements for combustion diagnostics and, by extending to higher power, Thomson scattering for diagnostics of low-density plasmas.

authors

• Limbach, Christopher

published proceedings

• Opt Lett

author list (cited authors)

• Friss, A. J., Limbach, C. M., & Yalin, A. P.

citation count

• 29

complete list of authors

• Friss, Adam J||Limbach, Christopher M||Yalin, Azer P

publication date

• July 2016

publisher

• Optica Publishing Group  Publisher

published in

• Optics Letters  Journal

keywords

• 40 Engineering
• 51 Physical Sciences
• 5108 Quantum Physics

Digital Object Identifier (DOI)

• 10.1364/OL.41.003193

start page

• 3193

end page

• 3196

volume

• 41

issue

• 14

URL

• http://dx.doi.org/10.1364/ol.41.003193