Broadband Tuning of External Cavity Dual-Upper-State Quantum-Cascade Lasers in Continuous Wave Operation

被引：25

作者：

Dougakiuchi, Tatsuo ^{[1
]}

Fujita, Kazuue ^{[1
]}

Akikusa, Naota ^{[2
]}

Sugiyama, Atsushi ^{[2
]}

Edamura, Tadataka ^{[1
]}

Yamanishi, Masamichi ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Cent Res Labs, Hamamatsu, Shizuoka 4348601, Japan

[2] Hamamatsu Photon KK, Laser Device R&D Ctr, Hamamatsu, Shizuoka 4348601, Japan

来源：

APPLIED PHYSICS EXPRESS | 2011年 / 4卷 / 10期

关键词：

D O I：

10.1143/APEX.4.102101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A wide wavelength tuning of an external cavity quantum-cascade laser (QCL) based on the anticrossed dual-upper-state to multiple-lower-state design is demonstrated in continuous wave (cw) operation at room temperature. The tuning ranges of 321 cm(-1) (Delta lambda/lambda similar to 22%) in pulsed operation and 248 cm(-1) (Delta lambda/lambda similar to 17%) in cw operation are achieved, despite employment of the active region with translational symmetry. The present tuning range in cw operation substantially exceeds the values obtained with the QCLs based on conventional broadband active region designs. In addition, the continuous, single mode tuning is realized with its widely homogeneous gain spectrum. (C) 2011 The Japan Society of Applied Physics

引用

页数：3

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