Waveguide-based optical chemical sensor
Abstract
The invention provides an apparatus and method for highly selective and sensitive chemical sensing. Two modes of laser light are transmitted through a waveguide, refracted by a thin film host reagent coating on the waveguide, and analyzed in a phase sensitive detector for changes in effective refractive index. Sensor specificity is based on the particular species selective thin films of host reagents which are attached to the surface of the planar optical waveguide. The thin film of host reagents refracts laser light at different refractive indices according to what species are forming inclusion complexes with the host reagents.
- Inventors:
-
- Ranchos de Taos, NM
- Los Alamos, NM
- Tucson, AZ
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of California (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 902826
- Patent Number(s):
- 7190851
- Application Number:
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Grace, Karen M, Swanson, Basil I, and Honkanen, Seppo. Waveguide-based optical chemical sensor. United States: N. p., 2007.
Web.
Grace, Karen M, Swanson, Basil I, & Honkanen, Seppo. Waveguide-based optical chemical sensor. United States.
Grace, Karen M, Swanson, Basil I, and Honkanen, Seppo. Tue .
"Waveguide-based optical chemical sensor". United States. https://www.osti.gov/servlets/purl/902826.
@article{osti_902826,
title = {Waveguide-based optical chemical sensor},
author = {Grace, Karen M and Swanson, Basil I and Honkanen, Seppo},
abstractNote = {The invention provides an apparatus and method for highly selective and sensitive chemical sensing. Two modes of laser light are transmitted through a waveguide, refracted by a thin film host reagent coating on the waveguide, and analyzed in a phase sensitive detector for changes in effective refractive index. Sensor specificity is based on the particular species selective thin films of host reagents which are attached to the surface of the planar optical waveguide. The thin film of host reagents refracts laser light at different refractive indices according to what species are forming inclusion complexes with the host reagents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 13 00:00:00 EDT 2007},
month = {Tue Mar 13 00:00:00 EDT 2007}
}
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