Résumé
langue originale | Anglais |
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Pages (de - à) | 29694-29704 |
Nombre de pages | 11 |
journal | Optics Express |
Volume | 20 |
Numéro de publication | 28 |
Les DOIs | |
état | Publié - 31 déc. 2012 |
Empreinte digitale
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A framework for far-field infrared absorption microscopy beyond the diffraction limit. / Silien, C.; Liu, N.; Hendaoui, N.; Tofail, S.A.M.; Peremans, A.
Dans: Optics Express, Vol 20, Numéro 28, 31.12.2012, p. 29694-29704.Résultats de recherche: Contribution à un journal/une revue › Article
TY - JOUR
T1 - A framework for far-field infrared absorption microscopy beyond the diffraction limit
AU - Silien, C.
AU - Liu, N.
AU - Hendaoui, N.
AU - Tofail, S.A.M.
AU - Peremans, A.
PY - 2012/12/31
Y1 - 2012/12/31
N2 - A framework is proposed for infrared (IR) absorption microscopy in the far-field with a spatial resolution below the diffraction limit. The sub-diffraction resolution is achieved by pumping a transient contrast in the population of a selected vibrational mode with IR pulses that exhibit alternating central minima and maxima, and by probing the corresponding absorbance at the same wavelength with adequately delayed Gaussian pulses. Simulations have been carried out on the basis of empirical parameters emulating patterned thin films of octadecyltrichlorosilane and a resolution of 250 nm was found when probing the CH2 stretches at 3.5 μm with pump energies less than ten times the vibrational saturation threshold.
AB - A framework is proposed for infrared (IR) absorption microscopy in the far-field with a spatial resolution below the diffraction limit. The sub-diffraction resolution is achieved by pumping a transient contrast in the population of a selected vibrational mode with IR pulses that exhibit alternating central minima and maxima, and by probing the corresponding absorbance at the same wavelength with adequately delayed Gaussian pulses. Simulations have been carried out on the basis of empirical parameters emulating patterned thin films of octadecyltrichlorosilane and a resolution of 250 nm was found when probing the CH2 stretches at 3.5 μm with pump energies less than ten times the vibrational saturation threshold.
UR - http://www.scopus.com/inward/record.url?scp=84872028186&partnerID=8YFLogxK
U2 - 10.1364/OE.20.029694
DO - 10.1364/OE.20.029694
M3 - Article
AN - SCOPUS:84872028186
VL - 20
SP - 29694
EP - 29704
JO - Opt. Express
JF - Opt. Express
SN - 1094-4087
IS - 28
ER -