Surface-plasmon distributed-feedback quantum cascade lasers operating pulsed, room temperature

被引：12

作者：

Bousseksou, A. ^{[1
,2
]}

Chassagneux, Y. ^{[1
,2
]}

Coudevylle, J. R. ^{[1
,2
]}

Colombelli, R. ^{[1
,2
]}

Sirtori, C. ^{[3
,4
]}

Patriarche, G. ^{[5
]}

Beaudoin, G. ^{[5
]}

Sagnes, I. ^{[5
]}

机构：

[1] Univ Paris 11, Inst Elect Fondamentale, F-91405 Orsay, France

[2] CNRS, UMR8622, F-91405 Orsay, France

[3] Univ Paris Diderot, Lab MPQ, F-75013 Paris, France

[4] CNRS, UMR7612, F-75013 Paris, France

[5] LPN, CNRS, Lab Photon & Nanostruct, F-91460 Marcoussis, France

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 09期

关键词：

D O I：

10.1063/1.3202765

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report distributed-feedback surface-plasmon quantum cascade lasers operating at lambda approximate to 7.6 mu m. The distributed feedback is obtained by the sole patterning of the top metal contact on a surface plasmon waveguide. Single mode operation with more than 30 dB side mode suppression ratio is obtained in pulsed mode and at room temperature. A careful experimental study confirms that by varying the grating duty cycle, one can reduce the waveguide losses with respect to standard, unpatterned surface-plasmon devices. This allows one to reduce the laser threshold current of more than a factor of 2 in the 200-300 K temperature range. This approach may lead to a fabrication technology for midinfrared distributed-feedback lasers based on a very simple processing. c 2009 American Institute of Physics. [DOI: 10.1063/1.3202765]

引用

页数：3

共 13 条

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