Excited-state absorption spectroscopy of metallo-porphyrin dyes with both Q-and B-band excitation

T. Sean Ross, David J. Hagan, Arthur Dogariu, Paul M. Buck, Eric W. Van Stryland

Research output: Contribution to conferencePaperpeer-review

Abstract

Metallophthalocyanine and metallo-porphyrine derivatives, both of which have strong absorption band in the red/near-infrared (Q-band) and the blue/ultraviolet (B-band) spectral regions, were studied at 532 nm. With picosecond pulses, strong excited-state absorption was observed from the bottom of this manifold. On nanosecond time scales, this excited state may decay to a triplet state, or decay to the ground state. Due to the strong reverse-saturable absorber of these materials, excited-state absorption (ESA) and refraction at other wavelengths throughout the visible are also studied. The spectral behavior of the ESA depends on both the linear and excited-state spectra. The latter could be expected to be different for Q-band and B-band excitation.

Original languageEnglish (US)
Number of pages1
StatePublished - Jan 1 1998
Externally publishedYes
EventProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO - San Francisco, CA, USA
Duration: May 3 1998May 8 1998

Other

OtherProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO
CitySan Francisco, CA, USA
Period5/3/985/8/98

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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