The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Sep. 27, 2010
Daniel W. Youngner, Maple Grove, MN (US);
Jeff A. Ridley, Shorewood, MN (US);
Mary K. Salit, Plymouth, MN (US);
Son T. LU, Plymouth, MN (US);
Linda J. Forner, Carver, MN (US);
Daniel W. Youngner, Maple Grove, MN (US);
Jeff A. Ridley, Shorewood, MN (US);
Mary K. Salit, Plymouth, MN (US);
Son T. Lu, Plymouth, MN (US);
Linda J. Forner, Carver, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A chip-scale atomic clock comprises a physics package and a laser die located in a first thermal zone of the physics package. A quarter wave plate is mounted in the physics package and is in optical communication with the laser die. A vapor cell is mounted in the physics package and is in optical communication with the quarter wave plate. The vapor cell is located in a second thermal zone that is independent from the first thermal zone. An optical detector is mounted in the physics package and is in optical communication with the vapor cell. The first thermal zone provides a first operation temperature at a first stability point associated with the laser die, and the second thermal zone provides a second operation temperature at a second stability point associated with the vapor cell.