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:
Apr. 28, 1998
Filed:
Nov. 06, 1996
Federico Capasso, Westfield, NJ (US);
Alfred Yi Cho, Summit, NJ (US);
Jerome Faist, Scotch Plains, NJ (US);
Albert Lee Hutchinson, Piscataway, NJ (US);
Gaetano Scamarcio, Bari, IT;
Carlo Sirtori, Summit, NJ (US);
Deborah Lee Sivco, Warren, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
The novel unipolar laser resembles a quantum cascade laser but utilizes radiative transitions between upper and lower minibands of superlattices, with injection of charge carriers from the lower miniband into the upper miniband of the adjacent downstream superlattice facilitated by a multilayer injector region. The lasing wavelength is typically in the mid-infrared, selectable by choice of the superlattice parameters. The novel laser is potentially well suited for high power operation, since it utilizes carrier transport in minibands, as opposed to tunneling between discrete energy states.