Measurement of Optical Limiting Threshold in Various Materials

نویسندگان

  • D. Vincent DREV
  • Denis Vincent
چکیده

-------------------------------------------------------------In the search for materials suitable for optical limiting applications to protect eyes and electrooptical sensors against laser radiation, fine carbon particles suspended in a liquid have been shown to possess highly desirable properties. This publication reports on the measurement of the threshold energy fluence for optical limiting of nanosecond and microsecond pulses in a high-performance carbon suspension named DREV CBS-100. Thresholds as low as 24 mJ/cm (nanosecond regime) and 100 mJ/cm (microsecond regime) have been obtained The technique has been tested by measuring materials whose properties can be found in the technical literature. Resume ----------------------------------------------------------------Les recherches sur les materiaux susceptibles de proteger les yeux et les capteurs electrooptiques contre le rayonnement laser par limitation optique ont montre que de fines particules de carbone en suspension dans un liquide presentent des caracteristiques interessantes. Ce rapport expose les resultats des mesures du seuil d'activation de la limitation optique d'impulsions laser d'une duree de quelques nanosecondes et d'une microseconde dans une suspension de carbone tres performante appeh!e DREV CBS-100. Les resultats montrent des seuils aussi bas que 24 mJ/cm dans le regime nanoseconde et 100 mJ/cm dans le regime microseconde. La technique de mesure utilisee a ete verifiee avec des materiaux dont les proprietes se retrouvent dans la litterature specialisee.

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تاریخ انتشار 2002