Fluoroalkyl-grafted mesoporous silica antireflective films with enhanced stability in vacuum.
Opt Lett
; 37(19): 4095-7, 2012 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-23027290
ABSTRACT
A new antireflective silica film with closed mesopores was successfully prepared for the optical elements used in vacuum of a high-power laser system. The ordered cagelike mesopores were formed with the direction of surfactant F127 and then closed by long-chain fluoroalkylsilane. The grazing incident x-ray diffraction and grazing incident small-angle x-ray scattering results indicated that the mesopores in film constructed a body-center cubic structure. The films exhibited excellent transmittance as high as 99.98% on quartz substrate. After a 1-month antipollution test with polydimethylsiloxane in vacuum, the decrease of transmittance was small as 0.02%. This film had a high laser-induced damage threshold of above 28 J/cm(2) at 1 ns laser pulse of 1053 nm wavelength.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
China