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Direct measurements of nonlinear absorption and refraction in solutions of phthalocyaninesDirect measurements are reported 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, it is shown that both the nonlinear absorption and refraction are fluence (energy-per-unit-area) rather than irradiance dependent. Thus, excited-state absorption is the dominant nonlinear absorption process, and the observed nonlinear refraction is also due to real population excitation.
Document ID
19920043047
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wei, T. H.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hagan, D. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sence, M. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Van Stryland, E. W.
(Central Florida, University Orlando, FL, United States)
Perry, J. W.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Coulter, D. R.
(JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Applied Physics B - Photophysics and Laser Chemistry
Volume: B 54
ISSN: 0721-7269
Subject Category
Atomic And Molecular Physics
Accession Number
92A25671
Funding Number(s)
CONTRACT_GRANT: NSF ECS-86-17066
Distribution Limits
Public
Copyright
Other

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