Open AccessMeasurements of light absorption efficiency in InSb nanowires
Author(s) -
A. Jurgilaitis,
H. Enquist,
Maher Harb,
Kimberly A. Dick,
Mattias Borg,
R. Nüske,
LarsErik Wernersson,
Jörgen Larsson
Publication year - 2013
Publication title -
structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.415
H-Index - 29
ISSN - 2329-7778
DOI - 10.1063/1.4833559
Subject(s) - diffraction , nanowire , materials science , absorption (acoustics) , excited state , optics , radiation , lattice (music) , optoelectronics , electron , molecular physics , atomic physics , chemistry , physics , quantum mechanics , acoustics
We report on measurements of the light absorption efficiency of InSb nanowires. The absorbed 70 fs light pulse generates carriers, which equilibrate with the lattice via electron-phonon coupling. The increase in lattice temperature is manifested as a strain that can be measured with X-ray diffraction. The diffracted X-ray signal from the excited sample was measured using a streak camera. The amount of absorbed light was deduced by comparing X-ray diffraction measurements with simulations. It was found that 3.0(6)% of the radiation incident on the sample was absorbed by the nanowires, which cover 2.5% of the sample
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