Femtosecond and continuous-wave nonlinear optical properties of (H2)2SnPc, Sn(OH)2Pc, and Sn(Cl)2Pc studied using Z-scan technique

S. Venugopal Rao

doi:10.1117/12.808401

23 February 2009 Femtosecond and continuous-wave nonlinear optical properties of (H₂)₂SnPc, Sn(OH)₂Pc, Sn(Cl)₂Pc studied using Z-scan technique

S. Venugopal Rao

Author Affiliations +

Proceedings Volume 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII; 719715 (2009) https://doi.org/10.1117/12.808401
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

Herein we report our experimental results on nonlinear optical properties of (H2)₂SnPc (I), Sn(OH)₂Pc (II), and Sn(Cl)₂Pc (III) studied using Z-scan technique with 800 nm, 100 fsec pulses, and 633 nm continuous wave (cw) laser excitation. Femtosecond open-aperture Z-scan data revealed these molecules exhibited strong 3PA coefficient (α₃). The estimated values of α₃ were ~4.0×10^-5, ~2.0×10^-5 cm³/GW², and ~1.5×10^-5 cm³/GW² for I, II, and III respectively obtained after deducting the solvent contribution. Closed aperture data recorded with femtosecond pulses revealed positive nonlinearity for all the molecules. We also observed large nonlinear response in the cw regime at 633 nm. Closed aperture scans performed with 633 nm indicated strong negative nonlinearity while open aperture scans depicted mixed response. The performance of these alkyl phthalocyanines in various time domains vis-à-vis recently reported phthalocyanines is discussed in detail.

Citation Download Citation

S. Venugopal Rao "Femtosecond and continuous-wave nonlinear optical properties of (H₂)₂SnPc, Sn(OH)₂Pc, Sn(Cl)₂Pc studied using Z-scan technique", Proc. SPIE 7197, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VIII, 719715 (23 February 2009); https://doi.org/10.1117/12.808401

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