Identification and analysis of materials and molecular structures
First Claim
1. A method for identification and analysis of materials and molecular structures comprising:
- providing a laser excitation source;
providing a plurality of filters, the plurality of filters including at least one reflective blocking filter with a transition width of <
50 cm−
1;
providing at least one optical unit delivering excitation energy to a sample substance and capturing a Raman signal scattering from the sample substance, the captured Raman signal being at least in a spectral range of +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1;
providing an optical spectrometer disposed in a path of the Raman signal, the optical spectrometer measuring a spectrum of the Raman signal and generating a detection signal, the optical spectrometer collecting low-frequency Stokes or anti-Stokes Raman spectra, the low-frequency Stokes or anti-Stokes Raman spectra being in a +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 Raman spectrum; and
providing a processing unit configured to analyze the captured Raman signal within the +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 portion of a spectrum of the sample substance, the analyzing of the +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 portion of the spectrum of the sample substance including measuring changes to at least one of peak shape and peak locations associated with structural characteristics or changes in form.
2 Assignments
0 Petitions
Accused Products
Abstract
Provided are methods and systems for identification and analysis of materials and molecular structures. An apparatus for identification and analysis of materials and molecular structures may include a laser. The laser may, in turn, include an amplified spontaneous emission-suppressed single-frequency laser excitation source. The apparatus may further comprise a plurality of filters. The plurality of filters may include reflective volume holographic grating blocking filters. The apparatus may also comprise an optical unit and an optical spectrometer. The optical unit may be configured to deliver excitation energy to a sample substance and capture Raman signal scattering from the sample substance. The optical spectrometer may be disposed in a path of the Raman signal and configured to measure a spectrum of the Raman signal and generate a detection signal. Finally, the apparatus may comprise a processing unit configured to analyze the spectrum.
203 Citations
15 Claims
-
1. A method for identification and analysis of materials and molecular structures comprising:
-
providing a laser excitation source; providing a plurality of filters, the plurality of filters including at least one reflective blocking filter with a transition width of <
50 cm−
1;providing at least one optical unit delivering excitation energy to a sample substance and capturing a Raman signal scattering from the sample substance, the captured Raman signal being at least in a spectral range of +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1;providing an optical spectrometer disposed in a path of the Raman signal, the optical spectrometer measuring a spectrum of the Raman signal and generating a detection signal, the optical spectrometer collecting low-frequency Stokes or anti-Stokes Raman spectra, the low-frequency Stokes or anti-Stokes Raman spectra being in a +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 Raman spectrum; andproviding a processing unit configured to analyze the captured Raman signal within the +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 portion of a spectrum of the sample substance, the analyzing of the +20 cm−
1 to +200 cm−
1 or −
20 cm−
1 to −
200 cm−
1 portion of the spectrum of the sample substance including measuring changes to at least one of peak shape and peak locations associated with structural characteristics or changes in form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification