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1. (WO2018227217) SYSTEMS AND METHODS USING MULTI-WAVELENGTH SINGLE-PULSE RAMAN SPECTROSCOPY
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Pub. No.: WO/2018/227217 International Application No.: PCT/US2018/045227
Publication Date: 13.12.2018 International Filing Date: 03.08.2018
IPC:
G01J 3/44 (2006.01) ,G01J 3/18 (2006.01) ,G02B 6/32 (2006.01) ,G01J 3/06 (2006.01) ,G01J 3/28 (2006.01) ,G02B 5/18 (2006.01)
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28
Investigating the spectrum
44
Raman spectrometry; Scattering spectrometry
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
12
Generating the spectrum; Monochromators
18
using diffraction elements, e.g. grating
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
26
Optical coupling means
32
having lens focusing means
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
02
Details
06
Scanning arrangements
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28
Investigating the spectrum
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
18
Diffracting gratings
Applicants:
UNIVERSITY OF MARYLAND BALTIMORE COUNTRY [US/US]; 1000 Hilltop Circle Baltimore, MD 21250, US
Inventors:
ARNOLD, Bradley; US
COOPER, Christopher; US
CATALDI, John; US
Agent:
JUNEAU, Todd, L.; US
Priority Data:
15/723,10302.10.2017US
62/515,68206.06.2017US
Title (EN) SYSTEMS AND METHODS USING MULTI-WAVELENGTH SINGLE-PULSE RAMAN SPECTROSCOPY
(FR) SYSTÈMES ET PROCÉDÉS UTILISANT UNE SPECTROSCOPIE RAMAN À IMPULSION UNIQUE À LONGUEURS D'ONDE MULTIPLES
Abstract:
(EN) The invention provides methods and apparatus comprising a multi-wavelength laser source that uses a single unfocused pulse of a low intensity but high power laser over a large sample area to collect Raman scattered collimated light, which is then Rayleigh filtered and focused using a singlet lens into a stacked fiber bundle connected to a customized spectrograph, which separates the individual spectra from the scattered wavelengths using a hybrid diffraction grating for collection onto spectra-specific sections of an array photodetector to measure spectral intensity and thereby identify one or more compounds in the sample.
(FR) La présente invention concerne des procédés et un appareil comprenant une source laser à longueurs d'onde multiples qui utilise une seule impulsion non focalisée d'un laser à faible intensité mais à haute puissance sur une grande zone d'échantillon pour collecter une lumière collimatée diffusée par effet Raman, qui est ensuite soumise à une filtration de Rayleigh et focalisée au moyen d'une lentille simple dans un faisceau de fibres empilées connecté à un spectrographe personnalisé, qui sépare les spectres individuels des longueurs d'onde diffusées au moyen d'un réseau de diffraction hybride à des fins de collecte sur des sections spécifiques de spectres d'un photodétecteur matriciel pour mesurer une intensité spectrale et identifier ainsi un ou plusieurs composés dans l'échantillon.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)