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}
}
Works referenced in this record:
Method and apparatus for calibrating a wavelength-tuning interferometer
patent, February 2006
- Deck, Leslie L.
- US Patent Document 6,995,848
Locking of a laser to an optical interferometer that is stabilized to a reference frequency
patent, December 2012
- Liang, Wei; Savchenkov, Anatoliy; Matsko, Andrey B.
- US Patent Document 8,331,409