Title: Solid-state optical refrigerator for cryogenic cooling of payloads

Abstract

A solid-state optical refrigerator for cryogenic cooling of a payload, the solid-state optical refrigerator including a laser cooling crystal including a first material and a dopant material; a thermal link including a second material, the thermal link being bonded to the laser cooling crystal and the thermal link being configured to be thermally linked to the payload to transfer heat conductively from the payload to the laser cooling crystal via the thermal link; and a vacuum chamber housing the laser cooling crystal and the thermal link, the vacuum chamber and thermal link having a combination of shape and coating such that laser and fluorescence light reflected off a wall of the vacuum chamber and laser and fluorescence light propagating within the thermal link are not incident on the payload.

Inventors:

Hehlen, Markus Peter

Issue Date:

2021-04-27

Research Org.:

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1823896

Patent Number(s):

10989450

Application Number:

15/636,615

Assignee:

Triad National Security, LLC (Los Alamos, NM)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT

Show more

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

F25B23/003 - {using selective radiation effect}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT

H01S3/025 - {of solid state lasers, e.g. housings or mountings}
H01S3/0405 - {Conductive cooling, e.g. by heat sinks or thermo-electric elements}
H01S3/0408 - {Radiative cooling, e.g. by anti-Stokes scattering in the active medium}
H01S3/1618 - {ytterbium}
H01S3/1653 - {YLiF4

Show less

DOE Contract Number:  

AC52-06NA25396

Resource Type:

Patent

Resource Relation:

Patent File Date: 06/28/2017

Country of Publication:

United States

Language:

English