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Z-scan studies in fluorescein-doped boric acid glass

DSpace at IIT Bombay

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Title Z-scan studies in fluorescein-doped boric acid glass
 
Creator DESHPANDE, R
RAO, KD
NAMPOOTHIRI, AVVN
KANDASAMY, K
NAYAR, BK
SINGH, BP
 
Subject nonlinear-optical interactions
 
Description The non-linear response of fluorescein-doped boric acid glass was probed using the Z-scan technique. A striking contrast was observed in its non-linear transmission characteristics at different argon-ion laser wavelengths. The non-linear transmission characteristics exhibit strong saturation behaviour at 457.9 nm whilst at 476.5 nm and 488.0 nm the response is dominated by intense excited state absorption. The experimental observations are explained using the four-level saturable absorber model. The excited state absorption cross-section, saturation intensity, light induced absorption and refraction changes have been determined along with the sign of the non-linearity at various argon laser wavelengths. The optical limiting characteristics of fluorescein at 476.5 nm and 457.9 nm are also reported. The behaviour of the sample was in agreement with the Z-scan observations.
 
Publisher CHAPMAN HALL LTD
 
Date 2011-07-20T07:36:08Z
2011-12-26T12:51:21Z
2011-12-27T05:47:30Z
2011-07-20T07:36:08Z
2011-12-26T12:51:21Z
2011-12-27T05:47:30Z
1997
 
Type Article
 
Identifier OPTICAL AND QUANTUM ELECTRONICS, 29(5), 567-578
0306-8919
http://dx.doi.org/10.1023/A:1018524121240
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5395
http://hdl.handle.net/10054/5395
 
Language en