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:
Aug. 21, 2018
Filed:
Oct. 09, 2015
Hrl Laboratories, Llc, Malibu, CA (US);
Christopher S. Roper, Oak Park, CA (US);
Logan D. Sorenson, Agoura Hills, CA (US);
Matthew T. Rakher, Oxnard, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A vapor-cell system and method is provided, comprising an enclosed vapor-cell region containing a vapor-cell gas phase comprising a vapor-cell alkali or alkaline earth metal, wherein the vapor-cell region is configured to allow at least one vapor-cell optical path through the vapor-cell gas phase; an enclosed reservoir region containing a reservoir alkali or alkaline earth metal, wherein the reservoir region is in vapor isolation from the vapor-cell region; a solid electrolyte disposed in ionic communication between the vapor-cell region and the reservoir region; a first electrode disposed between the solid electrolyte and the vapor-cell region; and a second electrode disposed between the solid electrolyte and the reservoir region, wherein the second electrode is electrically isolated from the first electrode. This vapor-cell system enables independent control of the alkali or alkaline earth vapor pressure in the vapor cell. The principles disclosed herein can improve long-term frequency stability in systems having vapor cells.