| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 92 0 |
 SM ISO690:2012MICHELOTTI, Francesco, FAZIO, Eugenio S., SENESI, Folco, BERTOLOTTI, Mario, CHUMASH, Valentin, ANDRIESH, Andrei. Nonlinearity and photostructural changes in glassy As2S3 thin films. In: Optics Communications, 1993, vol. 101, pp. 74-78. ISSN 0030-4018. DOI: https://doi.org/10.1016/0030-4018(93)90326-Z |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  Optics Communications |
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| Volumul 101 / 1993 / ISSN 0030-4018 | ||||||
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| DOI:https://doi.org/10.1016/0030-4018(93)90326-Z | ||||||
| Pag. 74-78 | ||||||
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| Rezumat | ||||||
Measurements are reported of the refractive index and absorption coefficient changes of amorphous As2S3 (chalcogenide glass) thin films due to cw laser light irradiation. We have measured the transmittance through a thin film in the Z-scan technique configuration. Two different contributions to refractive index changes are demonstrated, showing the existence of a permanent and a dynamical effect. The first effect was demonstrated performing usual normal incidence transmittance measurements. The second dynamical change, revealed by the Z-scan technique, disappears once the light source is turned off: measured in the latter case is a maximum change of the refractive index Δn=-8×10-3 in the cw regime at λ=514.5 nm. |
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| Cuvinte-cheie Arsenic compounds, Laser beams, refractive index, thin films |
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