Retroreflecting multipass cell for Raman scattering
Abstract
A retroreflecting multipass cell consisting of two lenses and both on-axis and off-axis retroreflecting mirror assemblies has been constructed and tested. A gain in Raman scattered signal intensity of 20 has been attained in a focal volume 1.1 mm x 0.3 mm x 0.3 mm. A system employing off-axis paraboloids should provide somewhat higher gain and a diffraction limited focal volume. These systems are applicable to Raman diagnostics of various gas dynamic processes, including flame gases, or the characterization of the gas mixing process in gas-dynamic or chemical laser nozzle arrays.
- Publication:
-
Applied Optics
- Pub Date:
- July 1977
- DOI:
- 10.1364/AO.16.002004
- Bibcode:
- 1977ApOpt..16.2004H
- Keywords:
-
- Raman Spectra;
- Retroreflection;
- Spectrometers;
- Focusing;
- Gratings (Spectra);
- Imaging Techniques;
- Paraboloid Mirrors;
- Raman Spectroscopy;
- Instrumentation and Photography;
- SCATTERING: RAMAN;
- CELLS;
- RAMAN EFFECT;
- SPECTROSCOPY: RAMAN