Prof. Lorenzo Echevarria Profile

Prof. Lorenzo Echevarria

Professor at Univ Simon Bolivar

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Author

Publications (6)

Proceedings Article | 22 November 2005 Paper

Evaluation of photosensitizers singlet oxygen production for photodynamic therapy applications using time resolved thermal lens

Lorenzo Echevarria, Luis Rodríguez, Aristides Marcano, Omar Estrada, Mary Salazar, Felipe Quintero

Proceedings Volume 6009, 60090K (2005) https://doi.org/10.1117/12.629331

KEYWORDS: Oxygen, Quantum efficiency, Luminescence, Photodynamic therapy, Tumors, Absorption, Laser beam diagnostics, Molecules, Absorbance, Signal processing

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Proceedings Article | 21 October 2004 Paper

Photophysical and photochemical properties of Bauhinia megalandra (Caesalpinaceae) extracts as new PDT photosensitizer

Franklin Vargas Tovar, C. Rivas, O. Estrada, Aristides Marcano O., Lorenzo Echevarria, Yrene Diaz, I. Alexander, L. Rodriguez, L. Padron, I. Rivera

Proceedings Volume 5622, (2004) https://doi.org/10.1117/12.589314

KEYWORDS: Oxygen, Luminescence, Quantum efficiency, Photodynamic therapy, Absorption, Proteins, Tissue optics, Chlorine, Tumors, Clinical trials

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Proceedings Article | 21 October 2004 Paper

Stimulated Raman red-light generation by acetone as a perspective source for photodynamic therapy applications

Lorenzo Echevarria, L. Rodriguez, Vincent Piscitelli, O. Estrada, Aristides Marcano O.

Proceedings Volume 5622, (2004) https://doi.org/10.1117/12.589349

KEYWORDS: Raman spectroscopy, Photodynamic therapy, Dye lasers, Raman scattering, Nd:YAG lasers, Molecules, Laser scattering, Light, Oxygen, Tissue optics

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Proceedings Article | 7 December 2001 Paper

Comparative study of the nonlinear optical surface response of metal-substituted porphyrins adsorbed on glass

Lorenzo Echevarria, Hector Gutierrez, Manuel Caetano

Proceedings Volume 4461, (2001) https://doi.org/10.1117/12.449846

KEYWORDS: Polarization, Glasses, Wave plates, Prisms, Signal detection, Harmonic generation, Reflection, Metals, Human-machine interfaces, Second-harmonic generation

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Proceedings Article | 7 December 2001 Paper

Concentration dependence of surface nonlinear susceptibility of vanadyl-porphyrin at silica surfaces

Lorenzo Echevarria, Hector Gutierrez, Veronica Sosa, Manuel Caetano

Proceedings Volume 4461, (2001) https://doi.org/10.1117/12.449845

KEYWORDS: Polarization, Glasses, Prisms, Silica, Second-harmonic generation, Harmonic generation, Interfaces, Signal detection, Nonlinear optics, Reflection

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Proceedings Article | 11 October 1999 Paper

Second harmonic generation studies of metal and nonmetal porphyrins at silica surfaces

Lorenzo Echevarria, Vincent Piscitelli, Jimmy Castillo, C. Scott, Manuel Caetano

Proceedings Volume 3796, (1999) https://doi.org/10.1117/12.368286

KEYWORDS: Second-harmonic generation, Molecules, Silica, Interfaces, Harmonic generation, Polarization, Dielectric polarization, Nonmetals, Molecular interactions, Metals

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Showing 5 of 6 publications

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