Title

Direct Measurements Of Nonlinear Absorption And Refraction In Solutions Of Phthalocyanines

Keywords

33.00; 42.65; 42.80

Abstract

We report direct measurements of the excited singlet state absorption cross section and the associated nonlinear refractive cross section using picosecond pulses at 532 nm in solutions of phthalocyanine and naphthalocyanine dyes. By monitoring the transmittance and far field spatial beam distortion for different pulsewidths in the picosecond regime, we determine that both the nonlinear absorption and refraction are fluence (energy per unit area) rather than irradiance dependent. Thus, excited state absorption (ESA) is the dominant nonlinear absorption process, and the observed nonlinear refraction is also due to real population excitation. © 1992 Springer-Verlag.

Publication Date

1-1-1992

Publication Title

Applied Physics B Photophysics and Laser Chemistry

Volume

54

Issue

1

Number of Pages

46-51

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/BF00331733

Socpus ID

34249843720 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/34249843720

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