Open AccessCompetition between the excited-state refraction and excited-state absorption induced transient thermal refraction of metallic porphyrin compound
Author(s) -
Yu-ming Chen,
Yuxiao Wang,
Jiang Li,
Xueru Zhang,
Ji Yang,
Yuliang Li,
Song Ye
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.995
Subject(s) - excited state , refraction , absorption (acoustics) , materials science , atomic physics , ultrafast laser spectroscopy , laser , optics , physics
The competition between the excited-state absorption induced transient thermal refraction and the excited-state refraction of a novel metallic porphyrin compound Zn-porphyrin was studied by the excited-state absorption induced transient thermal refraction theory combined with the excited-state refraction theory. The transformation between self-focusing and self-defocusing of the sample for different pulse widths was observed. The sample exhibited self-focusing effect attributed mainly to excited-state refraction for 4 ns laser pulse, while in the self-defocusing effect for 8 ns laser pulse the excited-state absorption induced transient thermal refraction dominates the excited-state refraction.