Patent · US Expired

Optical irradiation device for the polarization of alkali atoms and a device for the hyperpolarization of noble gases

US7768705B2 · kind B2 · utility

1Cited by

1References

10Claims

0Family size

Assignee

LIMO PATENTVERWALTUNG GmbH & Co. KG · DE

Inventors

Thomas Mitra · Dortmund, DE
Markus Revermann · Wietmarschen, DE
Frank Felice · Dortmund, DE

Key dates

Filing date	Jun 8, 2005
Grant date	Aug 3, 2010
Priority date	—
Expiry date	Oct 26, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/4062
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical irradiation device for the polarization of alkali metal atoms for the hyperpolarization of noble gases by spin exchange includes at least one semiconductor laser device which can generate laser light which, with regard to its wavelength, is suitable for the polarization of the alkali metal atoms. A polarizer effects circular polarization of the laser light generated by the semiconductor laser device. A device for introducing the laser light into a working region in which the alkali metal atoms to be polarized can be present, and a device for defining a wavelength of the laser light, which can couple part of the laser light back into the semiconductor laser device in order thereby to define the wavelength of the laser light at a predetermined wavelength or a predetermined wavelength range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.