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Title: In situ calibration of a light source in a sensor device

Abstract

A sensor device is described herein, wherein the sensor device includes an optical measurement system, such as an interferometer. The sensor device further includes a low-power light source that is configured to emit an optical signal having a constant wavelength, wherein accuracy of a measurement output by the sensor device is dependent upon the optical signal having the constant wavelength. At least a portion of the optical signal is directed to a vapor cell, the vapor cell including an atomic species that absorbs light having the constant wavelength. A photodetector captures light that exits the vapor cell, and generates an electrical signal that is indicative of intensity of the light that exits the vapor cell. A control circuit controls operation of the light source based upon the electrical signal, such that the light source emits the optical signal with the constant wavelength.

Inventors:
; ;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234215
Patent Number(s):
9222810
Application Number:
14/031,863
Assignee:
Sandia Corporation
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Sep 19
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 58 GEOSCIENCES

Citation Formats

Okandan, Murat, Serkland, Darwin k., and Merchant, Bion J.. In situ calibration of a light source in a sensor device. United States: N. p., 2015. Web.
Okandan, Murat, Serkland, Darwin k., & Merchant, Bion J.. In situ calibration of a light source in a sensor device. United States.
Okandan, Murat, Serkland, Darwin k., and Merchant, Bion J.. Tue . "In situ calibration of a light source in a sensor device". United States. https://www.osti.gov/servlets/purl/1234215.
@article{osti_1234215,
title = {In situ calibration of a light source in a sensor device},
author = {Okandan, Murat and Serkland, Darwin k. and Merchant, Bion J.},
abstractNote = {A sensor device is described herein, wherein the sensor device includes an optical measurement system, such as an interferometer. The sensor device further includes a low-power light source that is configured to emit an optical signal having a constant wavelength, wherein accuracy of a measurement output by the sensor device is dependent upon the optical signal having the constant wavelength. At least a portion of the optical signal is directed to a vapor cell, the vapor cell including an atomic species that absorbs light having the constant wavelength. A photodetector captures light that exits the vapor cell, and generates an electrical signal that is indicative of intensity of the light that exits the vapor cell. A control circuit controls operation of the light source based upon the electrical signal, such that the light source emits the optical signal with the constant wavelength.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {12}
}

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