Photocurrent Measurements on a Quantum Cascade Laser Device by Fourier Transform Infrared Microscope

被引：2

作者：

Enobio, Eli Christopher I. ^{[1
]}

Sato, Hiroki ^{[1
]}

Ohtani, Keita ^{[1
]}

Ohno, Yuzo ^{[1
]}

Ohno, Hideo ^{[1
]}

机构：

[1] Tohoku Univ, Elect Commun Res Inst, Lab Nanoelect & Spintron, Sendai, Miyagi 9808577, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2012年 / 51卷 / 06期

关键词：

INTERSUBBAND TRANSITIONS; INTERFACE ROUGHNESS; ROOM-TEMPERATURE; SELECTION-RULES; CONDUCTION-BAND; WELLS; SPECTROSCOPY; TRANSMISSION; SCATTERING; LINEWIDTH;

D O I：

10.1143/JJAP.51.06FE15

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2012 The Japan Society of Applied Physics

引用

页数：3

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