Low temperature near-field scanning optical microscopy on infrared and terahertz photonic-crystal quantum cascade lasers

被引：12

作者：

Moldovan-Doyen, I. C. ^{[1
]}

Xu, G. ^{[2
]}

Greusard, L. ^{[1
]}

Sevin, G. ^{[2
]}

Strupiechonski, E. ^{[2
]}

Beaudoin, G. ^{[3
]}

Sagnes, I. ^{[3
]}

Khanna, S. P. ^{[4
]}

Linfield, E. H. ^{[4
]}

Davies, A. G. ^{[4
]}

Colombelli, R. ^{[2
]}

De Wilde, Y. ^{[1
]}

机构：

[1] CNRS, ESPCI ParisTech, Inst Langevin, F-75231 Paris 05, France

[2] Univ Paris 11, UMR CNRS 8622, Inst Elect Fondamentale, F-91405 Orsay, France

[3] CNRS, LPN, F-91460 Marcoussis, France

[4] Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 23期

基金：

英国工程与自然科学研究理事会;

关键词：

DESIGN; SPECTROSCOPY;

D O I：

10.1063/1.3597411

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the development of a scattering-type near-field scanning optical microscope (sNSOM) which operates at temperatures down to 100 K with a scanning range of up to 400 mu m. We have used this sNSOM to map the electromagnetic near-field on mid-IR and terahertz (THz) surface emitting quantum cascade lasers with photonic-crystal resonators. Mid-IR devices operate at lambda = 7.5 mu m (40 THz) while THz devices operate at lambda approximate to 110 mu m (2.7 THz). The near-field images-in agreement with numerical calculations-demonstrate an instrument resolution of 100's nm. (C) 2011 American Institute of Physics. [doi:10.1063/1.3597411]

引用

页数：3

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