Deformometer for determining deformation of an optical cavity optic

Patent metadata

Field	Value
Publication number	US-10948282-B2
Application number	US-201916520677-A
Country	US
Kind code	B2
Filing date	Jul 24, 2019
Priority date	Aug 6, 2018
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A deformometer includes: a cavity body; entry and exit optical cavity optics, such that the optical cavity produces filtered combined light from combined light; a first laser that provides first light; a second laser that provides second light; an optical combiner that: receives the first light; receives the second light; combines the first light and the second light; produces combined light from the first light and the second light; and communicates the combined light to the entry optical cavity optic; a beam splitter that: receives the filtered combined light; splits the filtered combined light; a first light detector in optical communication with the beam splitter and that: receives the first filtered light from the beam splitter; and produces a first cavity signal from the first filtered light; and a second light detector that: receives the second filtered light; and produces a second cavity signal from the second filtered light.

First claim

What is claimed is:

1. A deformometer for determining deformation of an optical cavity optic disposed on an optical cavity, the deformometer comprising:
a first optical cavity comprising:
a cavity body;
a first entry optical cavity optic disposed at an entry end of the cavity body; and
a first exit optical cavity optic disposed at an exit end of cavity body, the first entry optical cavity optic in optical communication and optically opposing the first exit optical cavity optic,
such that the first optical cavity:
receives a reference gas at a first pressure P 1 ;
receives a first light; and
produces a first filtered light from the first light;

a second optical cavity comprising:
a second entry optical cavity optic disposed at the entry end of the cavity body; and
a second exit optical cavity optic disposed at the exit end of the cavity body, the second entry optical cavity optic in optical communication and optically opposing the second exit optical cavity optic,
such that the second optical cavity:
receives a second gas at a second pressure P 2 ;
receives a second light; and
produces a second filtered light from the second light;

a gas source in fluid communication with the second optical cavity and providing the second gas to the second optical cavity; and
a second pump in fluid communication with the optical cavity to pump the second gas from the optical cavity;
a first laser in optical communication with the first optical cavity and that provides the first light to the first optical cavity; and
a second laser in optical communication with the second optical cavity and that provides the second light to the second optical cavity, such that the deformation of the first optical cavity optic, the second optical cavity optic, the third optical cavity optic, and the fourth optical cavity optic is determined from the first cavity signal and the second cavity signal.

2. A process for determining deformation of an optical cavity optic disposed on an optical cavity with a deformometer, the process comprising:
receiving, by a first optical cavity, a reference gas at a first pressure;
receiving, by the first optical cavity, a first light;
producing, by the first optical cavity, a first filtered light from the first light;
receiving, by a second optical cavity, a second gas at a second pressure;
receiving, by the second optical cavity, a second light;
producing, by the second optical cavity, a second filtered light from the second light;
detecting the first filtered light and the second filtered light; and
analyzing the first filtered light and the second filtered light to determining deformation of the first optical cavity and the second optical cavity.

3. The process of claim 2 , further comprising pumping the second gas from the second optical cavity.

4. The process of claim 2 , further comprising providing, by a first laser in optical communication with the first optical cavity, the first light to the first optical cavity.

5. The process of claim 2 , further comprising providing, by a second laser in optical communication with the second optical cavity, the second light to the second optical cavity.

Assignees

• Government Of The Us Secretary Of Commerce

Inventors

• Egan Patrick F
• Hendricks Jay H
• Stone Jr Jack A

Classifications

• H01S5/4075

  Beam steering · CPC title

• G01B11/16 Primary

  for measuring the deformation in a solid, e.g. optical strain gauge · CPC title

• G01B9/02021

  contacting different faces of object, e.g. opposite faces · CPC title

• H01S5/4087

  emitting more than one wavelength · CPC title

• H01S5/4012

  Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms · CPC title