Excited state absorption: a key phenomenon for the improvement of biphotonic based optical limiting at telecommunication wavelengths.
Spectroscopic properties, two-photon absorption (TPA) and excited state absorption (ESA), of two organic cyanine dyes and of a ruthenium based organometallic cyanine are compared in order to rationalize their similar ns-optical power limiting (OPL) efficiency in the telecommunication wavelength range. The TPA contribution to the ns-OPL behavior is higher for both organic cyanines, while the main process is a TPA-induced ESA in the case of the organometallic system, in which the ruthenium induces a broadening of the NIR-ESA band and resulting in a strong spectral overlap between TPA and ESA spectra.
Ecole Normale Supérieure de Lyon, CNRS-UMR 5182, Université de Lyon 1, 46 Allée d'Italie, F-69364 Lyon cedex 07, France.
Quentin
Q
Bellier
Nikolay S
NS
Makarov
Pierre-Antoine
PA
Bouit
Stéphane
S
Rigaut
Kenji
K
Kamada
Patrick
P
Feneyrou
Gérard
G
Berginc
Olivier
O
Maury
Joseph W
JW
Perry
Chantal
C
Andraud
D002232:Carbocyanines / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry; D013053:Spectrophotometry
D002232:Carbocyanines; D004396:Coloring Agents; D009942:Organometallic Compounds; D012428:Ruthenium