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Project TitleNested Frequency Comb for Absolute Index Measurement
Track Code2014-044
Short Description

A new method of detecting gamma rays from neutrons.

Abstract

This new technique of Intracavity Phase Interferometry (IPI) is implemented with compact mode-locked fiber lasers, which senses changes of indices of refraction with utmost sensitivity. Unlike traditional sensors where the signal is proportional to the length of the sensing element, it can be shown that the sensitivity is independent of the size of the laser device, and miniaturization is highly desirable.

 
TagsRadiation Detection, detectors, sensors
 
Posted DateFeb 18, 2014 6:37 PM

Researcher

Name
Jean-Claude Diels
Ladan Arissian

Manager

Name
Briana Wobbe

Background

Interferometry has been a tool for precision measurement long before the invention of lasers. Traditional phase measurement, as in the Michelson interferometer, observe an amplitude modulation of interfering beams. The use of resonator based laser sensors results in a substantial sensitivity improvement. The sensitivity to a phase change is much higher than the conventional interferometer due to the sharp resonance feature in a resonator, which implies repeated passage. What is needed is a method of interferometry in an active resonator (laser) which combines the best of both worlds: exploiting the ultimate resonance enhancement and converting phase into a frequency rather than an amplitude measurement.

Technology Description

Researchers from the University of New Mexico have created a new method of detecting gamma rays from neutrons. It is based on a new technique of Intracavity Phase Interferometry (IPI), implemented with compact mode-locked fiber lasers, which senses changes of indices of refraction with utmost sensitivity.  Unlike traditional sensors where the signal is proportional to the length of the sensing element, it can be shown that the sensitivity is independent of the size of the laser device, and miniaturization is highly desirable.

Advantages/Applications

  • A sensor insensitive to electromagnetic interferences
  • Advanced functionality
  • Can be used to discover new irradiation detection methods
  • Compact form of detectors can be attempted

Publications

INQUIRES

STC has filed intellectual property on this exciting new technology and is currently exploring commercialization options. If you are interested in information about this or other technologies, please contact Arlene Mirabal at amirabal@stc.unm.edu or 505-272-7886.

Files

File Name Description
9,653,877 Issued Patent None Download

Intellectual Property

Patent Number Issue Date Type Country of Filing
9,653,877 May 16, 2017 Utility United States