Photocurrent Measurements on a Quantum Cascade Laser Device by Fourier Transform Infrared Microscope
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概要
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Intersubband photocurrent in the InAs/AlSb mid-infrared quantum cascade laser (QCL) device is measured. To characterize subband energies in a fabricated and functioning QCL laser device, Fourier-transform infrared (FTIR) microscope is used to focus the probe light on the cleaved mirror of QCL. Photocurrent associated with intersubband transitions in the active layer are observed up to room temperature and the origin of peaks is identified by numerical simulation, which demonstrates the potential as a characterization tool for QCL devices.
- 2012-06-25
著者
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Ohno Hideo
Laboratory For Electronic Intelligent Systems
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OHNO Yuzo
Laboratory for Electronic Intelligent Systems, Research Institute of Electrical Communication, Tohok
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Ohtani Keita
Laboratory For Electronic Intelligent Systems Research Institute Of Electrical Communication Tohoku
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Sato Hiroki
Laboratory Animal Research Center The Institute Of Medical Science The University Of Tokyo
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Ohno Yuzo
Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
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Enobio Eli
Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
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Ohtani Keita
Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
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