公开(公告)号：EP1500176B1

公开(公告)日：2006-06-07

申请号：EP03744952.7

申请日：2003-03-24

申请人： Consiglio Nazionale delle Ricerche - INFM Istituto Nazionale per la Fisica della Materia

发明人： TREDICUCCI, Alessandro ,  BELTRAM, Fabio ,  BEERE, Harvey, Edward ,  DAVIES, Alexander, Giles ,  KOEHLER, Ruedeger ,  LINFIELD, Edmund, Harold

IPC分类号： H01S5/34

CPC分类号： B82Y20/00 ,  H01S5/1046 ,  H01S5/2054 ,  H01S5/22 ,  H01S5/3213 ,  H01S5/3402

摘要： A semiconductor laser comprises an active region (12) which, in response to a pumping energy applied thereto, can produce a stimulated emission of radiation with a central wavelength (A) in the far infrared region, and a confinement region (16, 18, 22) suitable for confining the radiation in the active region (12) , and comprising at least one interface (16a, 16b, 22a) between adjacent layers that is capable of supporting surface plasmon modes generated by an interaction of the interface with the radiation. The confinement region (16, 18, 22) comprises a wave-guide layer (16) which is delimited on opposite sides by a first interface and by, a second interface (16a, 16b) .The guide layer (16) is doped in a manner such that the first and second interfaces (16a, 16b) are capable of supporting the plasmon modes, respectively, and is of a thickness (d) such as to bring about the accumulation of the plasmon modes in proximity to J the first and second interfaces (16a, 16b) , outside the layer (16) , and substantially a suppression of the plasmon modes, inside the layer.

公开(公告)号：EP1500176A1

公开(公告)日：2005-01-26

申请号：EP03744952.7

申请日：2003-03-24

申请人： INFM Istituto Nazionale per la Fisica della Materia

发明人： TREDICUCCI, Alessandro ,  BELTRAM, Fabio ,  BEERE, Harvey, Edward ,  DAVIES, Alexander, Giles ,  KOEHLER, Ruedeger ,  LINFIELD, Edmund, Harold

IPC分类号： H01S5/34

CPC分类号： B82Y20/00 ,  H01S5/1046 ,  H01S5/2054 ,  H01S5/22 ,  H01S5/3213 ,  H01S5/3402

摘要： A semiconductor laser comprises an active region (12) which, in response to a pumping energy applied thereto, can produce a stimulated emission of radiation with a central wavelength (A) in the far infrared region, and a confinement region (16, 18, 22) suitable for confining the radiation in the active region (12) , and comprising at least one interface (16a, 16b, 22a) between adjacent layers that is capable of supporting surface plasmon modes generated by an interaction of the interface with the radiation. The confinement region (16, 18, 22) comprises a wave-guide layer (16) which is delimited on opposite sides by a first interface and by, a second interface (16a, 16b) .The guide layer (16) is doped in a manner such that the first and second interfaces (16a, 16b) are capable of supporting the plasmon modes, respectively, and is of a thickness (d) such as to bring about the accumulation of the plasmon modes in proximity to J the first and second interfaces (16a, 16b) , outside the layer (16) , and substantially a suppression of the plasmon modes, inside the layer.