Optical coatings of variable refractive index and high laser-resistance from physical-vapor-deposited perfluorinated amorphous polymer

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872195

Chow, Robert ^[1]; Loomis, Gary E ^[1]; Thomas, Ian M ^[1]

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1. Livermore, CA

Variable index optical single-layers, optical multilayer, and laser-resistant coatings were made from a perfluorinated amorphous polymer material by physical vapor deposition. This was accomplished by physically vapor depositing a polymer material, such as bulk Teflon AF2400, for example, to form thin layers that have a very low refractive index (.about.1.10-1.31) and are highly transparent from the ultra-violet through the near infrared regime, and maintain the low refractive index of the bulk material. The refractive index can be varied by simply varying one process parameter, either the deposition rate or the substrate temperature. The thus forming coatings may be utilized in anti-reflectors and graded anti-reflection coatings, as well as in optical layers for laser-resistant coatings at optical wavelengths of less than about 2000 nm.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5882773
• OSTI ID: 872195
• Country of Publication: United States
• Language: English

Related Subjects

optical
coatings
variable
refractive
index
laser-resistance
physical-vapor-deposited
perfluorinated
amorphous
polymer
single-layers
multilayer
laser-resistant
material
physical
vapor
deposition
accomplished
physically
depositing
bulk
teflon
af2400
example
form
layers
10-1
31
highly
transparent
ultra-violet
near
infrared
regime
maintain
varied
simply
varying
process
parameter
rate
substrate
temperature
forming
utilized
anti-reflectors
graded
anti-reflection
wavelengths
2000
nm
resistant coating
optical wavelength
near infrared
vapor deposition
refractive index
physical vapor
process parameter
deposition rate
polymer material
bulk material
substrate temperature
resistant coatings
anti-reflection coating
optical wave
optical coatings
vapor depositing
rate temperature
optical coating
index optical
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