Modular photoacoustic detection device
First Claim
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1. A modular photoacoustic detection device comprising:
- a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator;
acoustic detectors coupled to the chambers;
a light source configured to emit a light beam having at least one wavelength for exciting a gas to be detected and which can be modulated to a resonance frequency of the photoacoustic cell;
a first photonic circuit configured to optically couple the light source to an input face of a first of the chambers, whereinthe first photonic circuit is arranged in a detachable manner in a first housing formed in the photoacoustic cell and emerging on the input face of the first chamber, andthe photoacoustic detection device further comprising at least one first cooling system configured to thermally adjust the light source and, when the light source is not arranged against the first photonic circuit, a second cooling system configured to thermally adjust the photoacoustic cell independently of the light source.
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Abstract
Modular photoacoustic detection device comprising:
- a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator;
- acoustic detectors coupled to the chambers;
- a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell;
- a first photonic circuit optically coupling the light source to an input face of a first of the chambers;
- wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.
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Citations
16 Claims
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1. A modular photoacoustic detection device comprising:
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a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source configured to emit a light beam having at least one wavelength for exciting a gas to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit configured to optically couple the light source to an input face of a first of the chambers, wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the photoacoustic cell and emerging on the input face of the first chamber, and the photoacoustic detection device further comprising at least one first cooling system configured to thermally adjust the light source and, when the light source is not arranged against the first photonic circuit, a second cooling system configured to thermally adjust the photoacoustic cell independently of the light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for producing a modular photoacoustic detection device, comprising:
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producing at least one photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; coupling acoustic detectors to the chambers; producing at least one light source configured to emit a light beam having at least one wavelength for making the photoacoustic cell resonate; producing at least one first photonic circuit arranged in a detachable manner in a first housing formed in the photoacoustic cell and emerging on an input face of a first of the chambers, and optically coupling the at least one light source to the input face of the first chamber, and producing at least one first cooling system configured to thermally adjust the at least one light source and, when the at least one light source is not arranged against the first photonic circuit, a second cooling system configured to thermally adjust the photoacoustic cell independently of the light source. - View Dependent Claims (16)
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Specification