Nonlinear Bragg mirror made from a silicon phthalocyanine/methyl methacrylate copolymer

R. A. Norwood, D. Swanson, R. Spitzer, J. R. Sounik, D. Holcomb, G. Hansen, J. Popolo

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A nonlinear Bragg mirror based on saturably absorbing nonlinear-optical polymers is proposed and demonstrated. The saturable absorber is a copolymer of silicon phthalocyanine with methyl methacrylate, which exhibits its largest nonlinear absorption near 670 nm. A 23-layer stack was made by spin coating, with polymethyl methacrylate as the low-index layer, and the linear-optical performance was found to agree reasonably well with predictions based on a modified two-level model of the optical properties of the copolymer. Optical limiting at an intensity of 5-10 MW/cm2 was demonstrated for 6-ns pulses at a wavelength of 688 nm.

Original languageEnglish (US)
Pages (from-to)577-579
Number of pages3
JournalOptics letters
Issue number8
StatePublished - Apr 15 1992

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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