DSpace at IIT Bombay >
IITB Publications >
Please use this identifier to cite or link to this item:
|Title: ||Z-scan studies on porphyrin derivative|
|Authors: ||KANDASAMY, K|
|Keywords: ||3rd-order optical nonlinearities|
|Issue Date: ||1997|
|Publisher: ||SPRINGER VERLAG|
|Citation: ||APPLIED PHYSICS B-LASERS AND OPTICS, 64(4), 479-484|
|Abstract: ||The nonlinear optical properties of a porphyrin derivative (T 3,4, BCEMPP) doped in boric acid glass were probed using the Z-scan technique at different argon-ion laser wavelengths. The nonlinear transmission characteristics exhibit saturable absorption at 457.9 nm and 476.5 nm while they are dominated by excited state absorption at 488.0 nm. The experimental observations are explained by using the four-level saturable absorber model. Saturation intensity, excited-state absorption cross-section, light-induced changes in the absorption and the refractive index along with its sign were determined at these argon-ion laser wavelengths. Further, optical limiting characteristics of this sample were studied. The observed limiting action is consistent with the Z-scan studies.|
|Appears in Collections:||Article|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.