Optomechanical reference

Patent metadata

Field	Value
Publication number	US-10352837-B2
Application number	US-201715850396-A
Country	US
Kind code	B2
Filing date	Dec 21, 2017
Priority date	Jul 25, 2017
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

An optomechanical reference includes a basal member; a flexure that includes: a floating link; a first flexural member; and a second flexural member such that: the floating link is moveably disposed; a first stator; a second stator; a first cavity including: a first primary mirror; a first secondary mirror; a first optical coupler in optical communication with the first secondary mirror; and a first cavity length; and a second cavity including: a second primary mirror; a second secondary mirror; a second optical coupler; and a second cavity length.

First claim

What is claimed is:

1. An optomechanical reference comprising:
a basal member;
a flexure disposed on the basal member and comprising:
a floating link disposed on the basal member;
a first flexural member interposed between the basal member and the floating link; and
a second flexural member interposed between the basal member and the floating link such that:
the floating link is moveably disposed on the basal member via flexing of the first flexural member and the second flexural member, and
the first flexural member and the second flexural member are spaced apart and in mechanical communication by the floating link;

a first stator disposed on the basal member and opposing the flexure such that:
the first stator is spaced apart from the flexure, and
the first stator is subject to displacement when the basal member is displaced;

a second stator disposed on the basal member and opposing the flexure such that:
the second stator is spaced apart from the flexure, and
the second stator is subject to displacement when the basal member is displaced;

a first cavity comprising:
a first primary mirror disposed on the flexure;
a first secondary mirror disposed on the first stator and in optical communication with the first primary mirror;
a first optical coupler in optical communication with the first secondary mirror and that provides a first laser light to the first cavity; and
a first cavity length comprising a first distance between the first primary mirror and the first secondary mirror; and

a second cavity comprising:
a second primary mirror disposed on the flexure;
a second secondary mirror disposed on the second stator and in optical communication with the second primary mirror;
a second optical coupler in optical communication with the first secondary mirror and that provides a second laser light to the second cavity; and
a second cavity length comprising a second distance between the second primary mirror and the second secondary mirror.

2. The optomechanical reference of claim 1 , wherein the flexural member comprises a leaf spring.

3. The optomechanical reference of claim 1 , further comprising a piezoelectric member disposed on the first stator.

4. The optomechanical reference of claim 1 , further comprising a piezoelectric member disposed on the second stator.

5. The optomechanical reference of claim 1 , further comprising:
an armature disposed on the basal member,
wherein the first stator and second stator are disposed on the armature.

6. The optomechanical reference of claim 5 , wherein the first primary mirror and the second primary mirror are disposed on a same surface of the flexure.

7. The optomechanical reference of claim 1 , further comprising:
a first armature disposed on the basal member,
wherein the first stator is disposed on the first armature.

8. The optomechanical reference of claim 7 , further comprising:
a second armature disposed on the basal member,
wherein the second stator is disposed on the second armature.

9. The optomechanical reference of claim 8 , wherein the flexure is interposed between the first stator and the second stator.

10. A process for performing optomechanical reference metrology, the process comprising:
providing an optomechanical reference of claim 1 ;
receiving the first laser light by the first cavity;
reflecting the first laser light between the first primary mirror and the first secondary mirror of the first cavity;
flexing the flexure with respect to the first stator in response to the reflecting the first laser light;
producing first reference light by the first cavity;
receiving the second laser light by the second cavity;
reflecting the second laser light between the second primary mirror and the second secondary mirror of the second cavity;
flexing the flexure with respect to the second stator in response to the reflecting the second laser light; and
producing second reference light by the second cavity to perform optomechanical reference metrology.

11. The process of claim 10 , further comprising:
comparing the first reference light to the second reference to produce a comparative signal; and
determining a reference force from the comparative signal.

12. The process of claim 10 , further comprising:
comparing the first reference light to the second reference to produce a comparative signal; and
determining a reference mass from the comparative signal.

13. The process of claim 10 , further comprising:
comparing the first reference light to the second reference to produce a comparative signal; and
determining a spring stiffness from the comparative signal.

Assignees

• Us Commerce

Inventors

• Shaw Gordon
• Taylor Jacob
• Wagner Ryan
• Guzman Felipe

Classifications

• G01N3/02 Primary

  Details · CPC title

• G01L1/044 Primary

  of leaf springs · CPC title

• G01N2203/029

  Leaf spring · CPC title

• G02B17/004

  Systems comprising a plurality of reflections between two or more surfaces, e.g. cells, resonators (multipass arrangements for optical cuvettes G01N21/031; laser resonators H01S3/05) · CPC title

• G01G3/08

  wherein the weighing element is in the form of a leaf spring · CPC title