CAVITY RING-DOWN SPECTROMETER HAVING MIRROR ISOLATION
First Claim
1. A cavity ring-down spectrometer comprising:
- resonator cavity;
a first sub-cavity situated in the resonator cavity;
a second sub-cavity situated in the resonator cavity;
a mirror situated in the first sub-cavity;
a space for a sample substance situated in the second sub-cavity; and
an isolator situated in the resonator cavity to reduce movement of a substance from one sub-cavity to another sub-cavity.
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Accused Products
Abstract
A cavity ring-down spectrometer having a light-conveying structure, a mirror and an isolator. The structure may form a resonator cavity, and the resonator cavity may include a sample sub-cavity and a mirror sub-cavity. A preconcentrator medium may be within a sample sub-cavity, and the medium may adsorb a sample substance entering the sample sub-cavity. A heater may heat the medium to desorb the sample through which a light can propagate. The mirror may be within the mirror sub-cavity, and the mirror may direct light through the mirror sub-cavity and the sample sub-cavity. The isolator may reduce, inhibit or prevent the sample substance in the sample sub-cavity from entering the mirror sub-cavity and affecting the mirror in the mirror sub-cavity.
94 Citations
20 Claims
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1. A cavity ring-down spectrometer comprising:
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resonator cavity;
a first sub-cavity situated in the resonator cavity;
a second sub-cavity situated in the resonator cavity;
a mirror situated in the first sub-cavity;
a space for a sample substance situated in the second sub-cavity; and
an isolator situated in the resonator cavity to reduce movement of a substance from one sub-cavity to another sub-cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sensing method comprising:
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propagating light through a mirror sub-cavity and a sample sub-cavity of a resonator cavity;
sensing a ring-down rate of the light in response to a sample substance entering the sample sub-cavity; and
reducing migration of the sample substance from the sample sub-cavity to the mirror sub-cavity. - View Dependent Claims (11, 12, 13, 14)
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15. A spectrometer system comprising:
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a structure forming a resonator cavity having at least first, seconds and third cavity legs; and
wherein;
the first cavity leg includes a first sample sub-cavity;
the second cavity leg includes a second sample sub-cavity;
the third cavity leg includes a third sample sub-cavity;
the resonator cavity further has at least a first mirror sub-cavity having a first mirror, a second mirror sub-cavity having a second mirror, and third mirror sub-cavity having a third mirror;
the first mirror sub-cavity is between the first and second sample sub-cavities;
the second mirror sub-cavity is between the second and third sample sub-cavities; and
the third mirror sub-cavity is between the third and first sample sub-cavities;
the first, second, and third sample sub-cavities are arranged to present corresponding first, second, and third substances;
the first, second, and third mirrors are arranged to direct light through the first, second, and third sample sub-cavities and the first, second, and third mirror sub-cavities; and
,a first isolator is arranged to reduce movement of the first and/or second substances from the first and second sample sub-cavities to the first mirror sub-cavity;
a second isolator arranged to reduce movement of the second and/or third substances from the second and third sample sub-cavities to the second mirror sub-cavity; and
a third isolator arranged to reduce movement of the third and/or first substances from the third and first sample sub-cavities to the third mirror sub-cavity. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification