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Optical spectroscopy is a powerful measurement tool
that can be used to analyse and measure a wide range of gases,
liquids and solids. As light passes through a material, different
wavelengths are absorbed (attenuated) by different amounts, giving
rise to a characteristic absorption spectrum for the material. This
“fingerprint” can be used to uniquely identify a particular
material, even when this is in the presence of other materials.
In many practical applications, it is necessary to interrogate only
one or two specific wavelengths, rather than the entire spectrum,
provided that there is some prior understanding of the range of
possible interfering materials. In many cases an additional
wavelength, with is unaffected by the presence or otherwise of the
intended measurand, is also accessed. This provides information on
the light source, the optical path and any other light absorbing
features and can thus be used as a reference signal.
AOS has been involved in a number of optical spectroscopy projects,
including
- gas (methane) cloud imaging (VOGUE)
- water ingress detection in gas mains (WI)
- in-cylinder hydrocarbon detection for gasoline engines
If you would like to discuss any of the areas mentioned above or
would be interested in talking to AOS regarding a current or future
project please feel free to contact us on 01664 567711 or
take a few moments to fill out our contact
form and someone from AOS will get in touch with you. |
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