Patent · US Active

Index-coupled distributed-feedback semiconductor quantum cascade lasers fabricated without epitaxial regrowth

US9991677B2 · kind B2 · utility

5Cited by

5References

11Claims

0Family size

Assignee

CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

Ryan M. Briggs · Pasadena, US
Clifford F. Frez · Pasadena, US
Siamak Forouhar · Pasadena, US

Key dates

Filing date	May 13, 2015
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Sep 8, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/2275
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Quantum cascade (QC) lasers and methods of fabricating such QC lasers are provided. The QC lasers incorporate a DFB grating without requiring the use of relying on epitaxial regrowth processes. The DFB gratings are formed as sidewall gratings along the lateral length of the QC active region, or the DFB gratings are formed atop the lateral length of the QC active region, and wherein the top DFB grating is planarized with a polymeric material.

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