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:
Dec. 11, 2007
Filed:
Jul. 14, 2006
Tiejun Chang, Bozeman, MT (US);
Mingzhen Tian, Bozeman, MT (US);
William R. Babbitt, Bozeman, MT (US);
Kristian D. Merkel, Bozeman, MT (US);
Tiejun Chang, Bozeman, MT (US);
Mingzhen Tian, Bozeman, MT (US);
William R. Babbitt, Bozeman, MT (US);
Kristian D. Merkel, Bozeman, MT (US);
Montana State University, Bozeman, MT (US);
Abstract
Techniques for reconfiguring spectral features stored in a medium based on a two-state atomic system with transition dipole moment μ includes causing a chirp to pass into the medium. The chirp includes a monochromatic frequency that varies in time by a chirp rate κ over a frequency band Bduring a time interval T. The amplitude Aof the chirp is constant over Band equal to=(bar/μπ)√{square root over ((κ ln [2/ε]))},The term hbar is reduced Plank's constant, ln is a natural logarithm function, and π is a ratio of a circumference of a circle to a diameter of the circle. For ε<<1, the atomic-state populations in the two states are inverted. For ε=1, prior atomic-state populations are erased, with final populations equal in the two states, regardless of populations before erasure.