An International Research Journal


SSN : 0971 - 3093

Vol  9, No. 2, April-June, 2000

Vol 9, No 2, 2000

Asian Journal of Physics                                                                                                          Vol. 9, No 2 (2000) 145-149

Excited state enhancement of third- order optical nonlinearity in AUTTP
studied by degenerate four wave mixing at 532nm

D Narayana Rao and S Venugopal Rao,

School of physics, University of Hyderabad, Hyderabad-500 046, India


We present our experimental results on the enhancement in the third- order non linear susceptibility in tetratolyl porphyrins measured using Degenerate Four Wave Mixing at 532 nm. The enhancement, by a factor of about 3, is attributed to the strong excited state absorption at this wavelength. © Anita Publications. All rights reserved.

Total Refs: 8


1. Gouterman M, The Porphyrins, Vols I-VIII, D Dolphin (ed), (Academc Press, New York), 1978:

    Smith K, Porphyrins & Metalloporphyrins, (Amsterdam, The Netherlands:Elsevier/North- Holland  

    Biomedical Press), 1976;

    Nalwa H S, Miyata S (eds), Nonlinear Optics of Organic Molecules and polymers,(CRC Press Inc,  


    Ravikanth M, Kumar G R, Current Sci,68(95)1010

2. Rao DVGLN, Aranda F J, Remy D E,Roach J F, Int J Nonlnear Opt Phys, 3(1994)511.

3. Balu W, Byrne H,Dennis W M, Kelly J M, Opt Commun,56(1985)25;

    Sevian A, Ravikanth M, Kumar G R, Chem Phys Lett, 263(1996)241.

4.Rao S V, Srinivas NKMN, Giribabu L, Maiya B G, Philip R, Kumar G R, Rao D N(Submitted to Opt 


    Rao S V,Srinivas N K M N, Giribabu L, Maiya B G, Philip R, Kumar G R, Rao D N, Submitted to

    JOSA B.

5. Sheik-Bahae M,Said A A, Wei T-H, Hagan D J, Van Stryland E W, IEEE J Quantum Electron,


6. Rodenberge D C,Heflin J R, Garito A F, Nature, 359(1992)309;

    Rodenberge D C,Heflin J R, Garito A F, Phys Rev A, 51(1995)3234.

7. Si J, Wang Y, Zhao J, Ye P, Wang D, Sun W, Dong S, Appl Phys Lett, 67(1995)1975;

    Si J, Yang Q, Wang Y,Ye P, Wang S,Qin J,Liu D, Opt Commun, 132(1995)311.

8. Rao S V, Rao D N, Akkara J A, De Cristofano B S,Rao DVGLN, Chem Phys Lett, 297(1998)491.



All rights reserved