公开(公告)号：DE60102343T2

公开(公告)日：2005-02-17

申请号：DE60102343

申请日：2001-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAPASSO FEDERICO ,  CHO ALFRED YI ,  CHU SUNG-NEE GEORGE ,  GMACHL CLAIRE F ,  HUTCHINSON ALBERT LEE ,  SERGENT ARTHUR MIKE ,  SIVCO DEBORAH LEE ,  TREDICUCCI ALESSANDRO ,  WANKE MICHAEL CLEMENT

IPC: H01S5/343 ,  H01S5/34

Abstract: The RT regions of an ISB light emitter comprise pre-biased SLs and a multiplicity of split quantum wells (SPQWs). A SPQW is a quantum well that is divided into a multiplicity of sub-wells by a first barrier layer sufficiently thin that the upper and lower energy states are split beyond their natural broadening and contribute to different minibands in each RT region. In contrast, adjacent SPQWs are coupled to one another by second barrier layers. The thicknesses of the latter layers are chosen so that minibands are created across each RT region. In one embodiment, the emitter includes an I/R region between adjacent RT regions, and in another embodiment the I/R regions are omitted.

公开(公告)号：CA2348005C

公开(公告)日：2005-01-11

申请号：CA2348005

申请日：2001-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SIVCO DEBORAH LEE ,  SERGENT ARTHUR MIKE ,  CAPASSO FEDERICO ,  GMACHL CLAIRE F ,  HUTCHINSON ALBERT LEE ,  CHO ALFRED YI ,  TREDICUCCI ALESSANDRO ,  CHU SUNG-NEE GEORGE ,  WANKE MICHAEL CLEMENT

IPC: H01S5/343 ,  H01S5/34

Abstract: The RT regions of an ISB light emitter comprise pre-biased SLs and a multiplicity of split quantum wells (SPQWs). A SPQW is a quantum well that i s divided into a multiplicity of sub-wells by a first barrier layer sufficiently thin that the upper and lower energy states are split beyond their natural broadening and contribute to different minibands in each RT region. In contrast, adjacent SPQWs are coupled to one another by second barrier layers. The thicknesses of the latter layers are chosen so that minibands are created across each RT region. In one embodiment, the emitter includes an I/R region between adjacent RT regions, and in another embodiment the I/R regions are omitted.

公开(公告)号：DE60007959T2

公开(公告)日：2004-12-23

申请号：DE60007959

申请日：2000-09-04

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAPASSO FEDERICO ,  CHO ALFRED YI ,  CHU SUNG-NEE GEORGE ,  GMACHL CLAIRE F ,  KOEHLER RUEDEGER ,  SIVCO DEBORAH LEE ,  TREDICUCCI ALESSANDRO

IPC: H01S5/125 ,  H01S5/042 ,  H01S5/10 ,  H01S5/12 ,  H01S5/34 ,  H01S5/30

Abstract: An article comprising a QC-DFB laser is disclosed. In the QC-DFB laser (10), an overlying grating structure achieves relatively strong coupling of the guided mode to the grating, and is thus highly effective in inducing single-mode operation even under cw operating conditions. The grating structure includes grooves (25) etched in a plasmon-enhanced confinement layer (PECL) (22) disposed adjacent and in contact with an upper metallic electrode (23). The grating structure and the PECL (22) are designed such that in the grooves (25), the laser mode travelling in the waveguide can couple efficiently to the surface-plasmon at the electrode interface. This results in strong modulation of the laser mode, leading to strong modulation of, inter alia, the effective refractive index.

公开(公告)号：DE60102343D1

公开(公告)日：2004-04-22

申请号：DE60102343

申请日：2001-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CAPASSO FEDERICO ,  CHO ALFRED YI ,  CHU SUNG-NEE GEORGE ,  GMACHL CLAIRE F ,  HUTCHINSON ALBERT LEE ,  SERGENT ARTHUR MIKE ,  SIVCO DEBORAH LEE ,  TREDICUCCI ALESSANDRO ,  WANKE MICHAEL CLEMENT

IPC: H01S5/343 ,  H01S5/34

Abstract: The RT regions of an ISB light emitter comprise pre-biased SLs and a multiplicity of split quantum wells (SPQWs). A SPQW is a quantum well that is divided into a multiplicity of sub-wells by a first barrier layer sufficiently thin that the upper and lower energy states are split beyond their natural broadening and contribute to different minibands in each RT region. In contrast, adjacent SPQWs are coupled to one another by second barrier layers. The thicknesses of the latter layers are chosen so that minibands are created across each RT region. In one embodiment, the emitter includes an I/R region between adjacent RT regions, and in another embodiment the I/R regions are omitted.

公开(公告)号：DE69900427D1

公开(公告)日：2001-12-13

申请号：DE69900427

申请日：1999-05-26

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BAILLARGEON JAMES NELSON ,  CAPASSO FEDERICO ,  CHO ALFRED YI ,  GMACHL CLAIRE F ,  HUTCHINSON ALBERT LEE ,  SIVCO DEBORAH LEE ,  TREDICUCCI ALESSANDRO

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

Abstract: A novel quantum cascade (QC) laser comprises a multiplicity of identical repeat units, with each repeat unit comprising an active region and an injector region. The injector region comprises quantum wells and barriers, selected to facilitate, under appropriate bias, resonant carrier transport from a lower energy level of a given active region to an upper energy level of an adjacent downstream active region. Carrier transition from the energy level to a lower energy level of an active region results in emission of infrared radiation. The laser is advangeously used in, e.g., a measurement system for detection of trace compounds in air.