Novel high-sensitivity thermal managed eclipse Z-scan technique

Anderson S. L. Gomes; Edilson L. Falcão Filho; Cid B. de Araújo; Diego Rativa; Renato E. de Araujo

doi:10.1117/12.700348

14 February 2007 Novel high sensitivity thermal managed eclipse Z-scan technique

Anderson S. L. Gomes, Edilson L. Falcão Filho, Cid B. de Araújo, Diego Rativa, Renato E. de Araujo

Proceedings Volume 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI; 64550Z (2007) https://doi.org/10.1117/12.700348
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

The field of Nonlinear Optics has provided many techniques to characterize photonic materials. The Z-scan method is a well estabileshed technique that exploits front wave distortions of the light beam to determine the nonlinear properties of optical materials. Several variations of the methods have been developed, as the eclipse Z-scan that can provide up to two orders of magnitude higher sensitivity than the original Z-scan set-up. We report a new variation of the Z-scan method to characterize the third-order optical nonlinearity of photonic materials. By exploiting the combination of the eclipse Z-scan with thermal nonlinearity management, we demonstrate an improvement in sensitivity and flexibility of the method to simultaneously characterize the thermal and nonthermal nonlinearity of optical materials. The method is demonstrated by measuring the nonlinear refractive index in CS₂, SiO₂ and H₂O as standard materials, and also of a biomaterial, the amino acid Tryptophan in water solution, using the same experimental set up based on a femtosecond Ti-saphire laser operating at 76MHz repetition rate.

Citation Download Citation

Anderson S. L. Gomes, Edilson L. Falcão Filho, Cid B. de Araújo, Diego Rativa, and Renato E. de Araujo "Novel high sensitivity thermal managed eclipse Z-scan technique", Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 64550Z (14 February 2007); https://doi.org/10.1117/12.700348

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