Two-photon absorption and broadband optical limiting with bis-donor stilbenes.
Large two-photon absorptivities are reported for symmetrical bis-donor stilbene derivatives with dialkylamino or diphenylamino groups. These molecules exhibit strong optical limiting of nanosecond pulses over a broad spectral range in the visible. Relative to bis(di-n-butylamino)stilbene, bis(diphenylamino)stilbene exhibits a 90-nm red shift of its optical limiting band but only a minimal shift of ~13 nm of its lowest one-photon electronic absorption band. Mixtures of these compounds offer an unprecedented combination of broad optical limiting bandwidth and high linear transparency.
Ehrlich
J E
JE
Wu
X L
XL
Lee
I Y
IY
Hu
Z Y
ZY
Röckel
H
H
Marder
S R
SR
Perry
J W
JW