A multipass transverse photoacoustic cell
Abstract
A small-volume multipass cell for photoacoustic detection is presented. Its transversely excited cylindrical cavity allows about 30 passes. The pressure and frequency dependence have been described with a simple model. This model is used to calculate the optimum design parameters for maximum sensitivity. A non-resonant design is shown to be best for low pressures (1 torr). For high pressures the resonant design is advantageous if combined with multipass operation. The transverse cell described can be as sensitive as the longitudinal cell commonly employed.
- Publication:
-
Infrared Physics
- Pub Date:
- September 1985
- DOI:
- 10.1016/0020-0891(85)90005-3
- Bibcode:
- 1985InfPh..25..683V
- Keywords:
-
- Acousto-Optics;
- Bandpass Filters;
- Infrared Absorption;
- Optimization;
- Photoacoustic Spectroscopy;
- Transverse Waves;
- Absorption Spectra;
- Cavity Resonators;
- Frequency Response;
- Infrared Lasers;
- Laser Spectroscopy;
- Pressure Dependence;
- Reflectors;
- Electronics and Electrical Engineering