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US 6,552,792 B1Granted
Wavelength modulated photoacoustic spectrometer
AssigneeSouthwest Sciences Incorporated
InventorsJeffrey S. Pilgrim, David S. Bomse
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Abstract
A wavelength modulated photoacoustic spectrometry system and method comprising: generating light from a light source; passing the light through a sample area; sampling sound produced by the light passing through the sample area with an acoustic detector; and controlling wavelength of the light with a wavelength controller, wherein the wavelength controller modulates the wavelength according to a waveform comprising square components.
Claims28
A wavelength modulated photoacoustic spectrometry system comprising:
- a light source;
- a sample area receiving light from said light source;
- an acoustic detector proximate said sample area;
- a wavelength controller controlling wavelength of light emitted by said light source, wherein said wavelength controller modulates the wavelength according to a waveform comprising square components.
1 more element
A wavelength modulated photoacoustic spectrometry method comprising the steps of:
- a) generating light from a light source;
- b) passing the light through a sample area;
- c) sampling sound produced by the light passing through the sample area with an acoustic detector;
- d) controlling wavelength of the light with a wavelength controller, wherein the wavelength controller modulates the wavelength according to a waveform comprising square components.
1 more element
Dependencies are inferred from the claim text.