Resonant optothermoacoustic detection of optical absorption
First Claim
Patent Images
1. An optical radiation detection device comprising:
- an acoustic detector;
one or more thermal sensing elements, wherein the one or more thermal sensing elements expand and contract upon absorption and dissipation thermal energy, and wherein the one or more thermal sensing elements are coupled to the acoustic detector so as to impart a mechanical force to the acoustic detector upon the expansion and contraction of the one or more thermal sensing elements; and
a light source positioned to provide optical radiation to a sample proximate to the one or more thermal sensing elements.
1 Assignment
0 Petitions
Accused Products
Abstract
A device comprising an acoustic detector, one or more thermal sensing elements coupled to the acoustic detector, and a light source. A method comprising directing a beam of light at a wavelength at or near one or more thermal sensing elements, wherein the thermal sensing elements are coupled to an acoustic detector, determining a resonance frequency of the acoustic detector, wherein the acoustic detector is coupled to one or more of the thermal sensing elements, and measuring the response of the acoustic detector to detect optical radiation absorption proximate to or at the surface of one or more thermal sensing elements.
8 Citations
20 Claims
-
1. An optical radiation detection device comprising:
-
an acoustic detector; one or more thermal sensing elements, wherein the one or more thermal sensing elements expand and contract upon absorption and dissipation thermal energy, and wherein the one or more thermal sensing elements are coupled to the acoustic detector so as to impart a mechanical force to the acoustic detector upon the expansion and contraction of the one or more thermal sensing elements; and a light source positioned to provide optical radiation to a sample proximate to the one or more thermal sensing elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method comprising:
-
a) directing a beam of light at a sample proximate to a surface of one or more thermal sensing elements, wherein the thermal sensing elements are coupled to an acoustic detector, wherein resonance of the acoustic detector causes the acoustic detector to output an output signal, and wherein the beam of light is characterized as having a wavelength; b) determining a resonance frequency of the acoustic detector while coupled to the one or more thermal sensing elements via the output signal; and c) measuring the response of the acoustic detector via the output signal to detect optical radiation absorption of the sample. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification