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    ARTICLE WITH QUANTUM CASCADE LASER
    1.
    发明专利
    ARTICLE WITH QUANTUM CASCADE LASER 失效

    公开(公告)号：JPH10144995A

    公开(公告)日：1998-05-29

    申请号：JP28032297

    申请日：1997-10-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CAPASSO FEDERICO ,  CHO ALFRED YI ,  FAIST JEROME ,  HUTCHINSON ALBERT LEE ,  SCAMARCIO GAETANO ,  SIRTORI CARLO ,  SIVCO DEBORAH LEE

    IPC: H01S5/00 ,  H01S5/34 ,  H01S5/343 ,  H01S3/18

    Abstract: PROBLEM TO BE SOLVED: To provide a new type of QC(quantum cascade) laser. SOLUTION: A QC laser has first and second clad layers and a core region between the clad layers. The core region has a plurality of nearly equal multilayer semiconductor repeated units 11, and each repeated unit has an active region 12 and a carrier injection region 13. The active region has an superlattice region with an upper mini band 171 and a lower mini band 161, and a mini gap is formed between the upper mini band and the lower mini band. A carrier injection region is selected, so that carriers can be phase-shifted easily from the lower mini band of a certain repetition unit to the upper mini band of repetition unit at an adjacent downstream side. The active region is selected so that the wavelength ranges from 3 to 15μm.

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