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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Design and fabrication of anti-reflection coating on Gallium Phosphide, Zinc Selenide and Zinc Sulfide substrates for visible and infrared application
 Vápenka, David ; Václavík, Jan
The article presents results of design and realization of dual-band antireflection coating on Gallium phosphide substrate. A layer stack of antireflection coating for bands 0.6-0.8μm and 3-5μm was designed using ZnS a MgF2 materials. Layer stack was deposited using thermal evaporation method. Expected transmittance spectra and the ones obtained on coated Gallium phosphide substrate are compared. Efficiency of anti-reflection coating is estimated and discrepancies are analysed and discussed
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Gallium Phosphide as a material for visible and infrared optics
 Václavík, Jan ; Vápenka, David
Gallium phosphide is interesting material for optical system working in both visible and MWIR or LWIR spectral ranges. Number of a material available for these applications is limited. They are typically salts, fluorides or sulphides and usually exhibit unfavorable properties like brittleness; softness; solubility in water and small chemical resistance. Although GaP has do not offer best optical parameters excels over most other material in mechanical and chemical resistance. The article describes its most important characteristics and outlines some applications where GaP should prove useful
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