Optical limiting with C_60 in polymethyl methacrylate

Abstract

We demonstrate optical limiting for the C(60) fullerene in polymethyl methacrylate (PMMA) as a solid polymer host. It is shown that the optical-limiting behavior is consistent with excited-state absorption (reverse saturable absorption) as a mechanism. We suggest that a higher threshold for optical limiting compared with that of C(60) in toluene is due to nonlinear scattering for the liquid. The performance of C(60) in PMMA is compared with that in chloroaluminum phthalocyanine, N-methylthioacridone, King's complex, and ruthenium King's complex in PMMA. Optical damage thresholds are reported.

Enhanced nonlinear absorption and optical limiting in semiconducting polymer/methanofullerene charge transfer films

“…[15][16][17][18][19][20][21][22] Comparable optical limiting was reported for thick layers ͑each several millimeters thick͒ of C 60 in polymethyl methacrylate when pumped on resonance at 532 nm. 23 This research was supported by the U. S. Air Force Office of Scientific Research under AFOSR93-1-0191 ͑Dr. Charles Lee, Program Officer͒.…”

Nanosecond optical limiting response of sandwich-type neodymium dyphthalocyanine in a co-polymer host

“…The optical limiting response of many chromophores have been studied in different solid matrices [15][16][17][18][19]. A solid-state optical limiter is simpler to implement for applications in imaging systems, night vision goggles, and coated or bulk windows.…”

Méthodes expérimentales de l'optique non linéaire

“…Afin de décrire l'absorption non linéaire de la molécule de do, plusieurs auteurs proposent un modèle à cinq niveaux [31,32]. Chaque état électronique de la molécule est associé à un grand nombre d'états vibroniques.…”