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]
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页数：3
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