Properties of IAD Single- and Multi-Layer Oxide Coatings PDF Download
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Author: JJ. McNally
Publisher:
ISBN:
Category : Laser-damage
Languages : en
Pages : 9
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Book Description
Properties of oxide thin films deposited using oxygen-ion assisted deposition (IAD) were studied. Previously, we reported on the properties of Al2O3/SiO2 and Ta2O5/SiO2 anti-reflection coatings fabricated using IAD. In this report we present results illustrating the effects of ion bombardment during the deposition of single-layer films of Ta2O5, Al2O3 and SiO2. The optical constants and stress measurements of these films are reported. Oxygen ion bombardment during deposition produced Ta2O5 and Al2O3 coatings with larger values of refractive index (n). No increase in n was observed for IAD SiO2. Laser damage results at 351 nm for Al2O3/SiO2 and Ta2O5/SiO2 AR coatings are presented. It appears that the IAD coatings did not have higher damage threshold values than the coatings deposited with no ion bombardment. A number of coatings were exposed to fluorine gas tests. The results from these tests are reported.
Author: JJ. McNally
Publisher:
ISBN:
Category : Laser-damage
Languages : en
Pages : 9
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Book Description
Properties of oxide thin films deposited using oxygen-ion assisted deposition (IAD) were studied. Previously, we reported on the properties of Al2O3/SiO2 and Ta2O5/SiO2 anti-reflection coatings fabricated using IAD. In this report we present results illustrating the effects of ion bombardment during the deposition of single-layer films of Ta2O5, Al2O3 and SiO2. The optical constants and stress measurements of these films are reported. Oxygen ion bombardment during deposition produced Ta2O5 and Al2O3 coatings with larger values of refractive index (n). No increase in n was observed for IAD SiO2. Laser damage results at 351 nm for Al2O3/SiO2 and Ta2O5/SiO2 AR coatings are presented. It appears that the IAD coatings did not have higher damage threshold values than the coatings deposited with no ion bombardment. A number of coatings were exposed to fluorine gas tests. The results from these tests are reported.
Author: Harold E. Bennett
Publisher: ASTM International
ISBN:
Category :
Languages : en
Pages : 728
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Book Description
Author:
Publisher:
ISBN:
Category : Laser materials
Languages : en
Pages : 424
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Book Description
Author: Harold Earl Bennett
Publisher:
ISBN:
Category : Laser beams
Languages : en
Pages : 726
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Book Description
Author: Harold Earl Bennett
Publisher: SPIE-International Society for Optical Engineering
ISBN: 9780819423702
Category : Technology & Engineering
Languages : en
Pages : 690
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Book Description
Author: Roger M. Wood
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 526
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Book Description
Author: James Joseph McNally
Publisher:
ISBN:
Category : Optical coatings
Languages : en
Pages : 328
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Book Description
The effects on the properties of Ta2O5, Al2O3, SiO2 and HfO2 single- and multi-layer optical coatings deposited using ion assisted deposition (IAD) were investigated. IAD is a novel deposition technique which utilizes a separate ion source to direct a beam of ions at the growing film. A Kaufman ion source was used to provide a monoenergetic, neutralized beam of oxygen ions independent of the material evaporation process. The optical and physical properties, as well as laser induced damage threshold (LIDT) values, were studied for coatings bombarded with 200, 300, 500 and 1000 eV oxygen ions at values of current density from 0 to 200 microAmp/sq cm. IAD was successfully applied to deposit coatings at low temperature on heavy metal fluoride (HMF) glass substrates. The coatings deposited using IAD were hard and dense. The IAD coatings improved the durability and abrasion resistance of the HMF glass substrates. The results of this investigation show that IAD can be used to improve the optical and physical properties of optical coatings.
Author: Philip Baumeister
Publisher: SPIE Press
ISBN: 9780819453136
Category : Optical coatings
Languages : en
Pages : 842
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Book Description
Baumeister organizes this book around the key subjects associated with functions of optical thin film performance, and provides a valuable resource in the field of thin film technology. The information is widely backed up with citations to patents and published literature. The author draws from 25 years of experience teaching classes at the UCLA Extension Program, and at companies worldwide to answer questions, such as: what are the conventions for a given analysis formalism? and, what other design approaches have been tried for this application?
Author: Olaf Stenzel
Publisher: Springer Science & Business
ISBN: 3642540635
Category : Science
Languages : en
Pages : 391
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Book Description
Optical coatings, i.e. multilayer stacks composed from a certain number of thin individual layers, are an essential part of any optical system necessary to tailor the properties of the optical surfaces. Hereby, the performance of any optical coating is defined by a well-balanced interplay between the properties of the individual coating materials and the geometrical parameters (such as film thickness) which define their arrangement. In all scientific books dealing with the performance of optical coatings, the main focus is on optimizing the geometrical coating parameters, particularly the number of individual layers and their thickness. At the same time, much less attention is paid to another degree of freedom in coating design, namely the possibility to tailor optical material properties to an optimum relevant for the required specification. This book, on the contrary, concentrates on the material aside of the problem. After a comprehensive review of the basics of thin film theory, traditional optical coating material properties and their relation to the efficiency of coating design methods, emphasis is placed on novel results concerning the application of material mixtures and nanostructured coatings in optical coating theory and practice, including porous layers, dielectric mixtures as well as metal island films for different applications.
Author: Roger N. Johnson
Publisher:
ISBN:
Category : Reference
Languages : en
Pages : 456
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Book Description
Sixty-one papers from the 1998 MRS fall meeting present research associated with generating microstructure-property-performance relationships of coatings produced by chemical and physical vapor deposition methods. Coverage includes properties and processing of PVD coatings, CVD coatings and films, CVD diamond, CVD diamond-like carbon, and hard coatings; coatings for harsh environments; CVD- chemistry and kinetics; and novel techniques. Annotation copyrighted by Book News, Inc., Portland, OR
