TY - JOUR
T1 - Nonlinear absorption and photoluminescence emission in nanocomposite films of Fuchsine Basic dye-polymer system
AU - Sreekumar, G.
AU - Louie Frobel, P. G.
AU - Sreeja, S.
AU - Suresh, S. R.
AU - Mayadevi, S.
AU - Muneera, C. I.
AU - Suchand Sandeep, C. S.
AU - Philip, Reji
AU - Mukharjee, Chandrachur
PY - 2011/4/11
Y1 - 2011/4/11
N2 - Fuchsine Basic dye-polyvinyl alcohol composite films were fabricated and their structure, nonlinear absorption as well as linear absorption and photoluminescence properties were investigated. Switchover from saturable absorption to two-photon assisted excited state absorption with increase in intensity was observed in the open aperture Z-scan study (Nd:YAG, 532 nm, 7 ns). The effective two-photon absorption coefficient β was found to be several orders higher than that reported for rhodamine B. The dye-polymer films were characterized as nanocomposites with dye microdomains encapsulated between molecules of the amorphous polymer and having average surface roughness as low as ≈0.46 nm. The samples also exhibited intense photoluminescence emission when excited with 534 nm radiation.
AB - Fuchsine Basic dye-polyvinyl alcohol composite films were fabricated and their structure, nonlinear absorption as well as linear absorption and photoluminescence properties were investigated. Switchover from saturable absorption to two-photon assisted excited state absorption with increase in intensity was observed in the open aperture Z-scan study (Nd:YAG, 532 nm, 7 ns). The effective two-photon absorption coefficient β was found to be several orders higher than that reported for rhodamine B. The dye-polymer films were characterized as nanocomposites with dye microdomains encapsulated between molecules of the amorphous polymer and having average surface roughness as low as ≈0.46 nm. The samples also exhibited intense photoluminescence emission when excited with 534 nm radiation.
UR - https://www.scopus.com/pages/publications/79953213271
UR - https://www.scopus.com/pages/publications/79953213271#tab=citedBy
U2 - 10.1016/j.cplett.2011.02.048
DO - 10.1016/j.cplett.2011.02.048
M3 - Article
AN - SCOPUS:79953213271
SN - 0009-2614
VL - 506
SP - 61
EP - 65
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -