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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2002),
  • paper CTuJ4

Supercontinuum Quantum Cascade Laser

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Abstract

Quantum cascade (QC) lasers1 are semiconductor injection lasers based on optical transitions between subbands within the conduction band of a multiple quantum well structure. One distinct feature is the cascading scheme, in which the electrons traverse a stack of many, typically several ten, active regions alternated with injector regions. So far, QC-lasers shared the characteristic, that all stages of the cascade were essentially identical. However, with this constraint abandoned, cascading can be a much more powerful tool for QC-laser design.2 Here, we will apply it to the generation of spectrally ultrabroadband, i.e. “supercontinuum”, laser emission.3

© 2002 Optical Society of America

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