Summer Short Course Series

Optical Thin Films

2017 Course Description

The course serves both as an introduction and a review for engineers and scientists of the principles of optical interference filter design while considering, in addition, recent advances in the current technology. Five sessions cover basic design techniques, coating types and their characteristics. The other five sessions include coating fabrication, substrate preparation, characterization, and digital design techniques. A tour of the University coating facilities stresses deposition and characterization methods and includes a tour of the OMEGA laser. Classes will start at 8:30 a.m. and end at 5 p.m.

June 19, Monday Morning

Design of Single-Layer Films, Dr. James B. Oliver: Index of refraction, absorption, dispersion, coating and substrate materials. Reflectance and transmittance of substrates and single-layer films, optical thickness, and interference. Coherent versus incoherent illumination. 

June 19, Monday Afternoon

Coating Techniques, Dr. James B. Oliver: Review of various methods for producing optical films, thin film structure, optical and physical thickness monitoring techniques, uniformity, and process control. 

Review of thin film structure and formation, vacuum environment, and components of a deposition system including evaporation sources, assist sources, and optical/physical thickness monitoring

June 19, Monday Evening

OMEGA TOUR:  LLE, 240 East River Road 

June 20, Tuesday Morning

Design-Anti-Reflection Coatings, Dr. James B. Oliver:  AR Coatings: Single layer, two layer, multilayer, and gradient index. Graphical design techniques; computer optimization techniques.

June 20, Tuesday Afternoon

Tour of a large substrate coating facility for high peak-power lasers, Dr. James B. Oliver and Ms. Amy Rigatti:  The students will see three areas: coating, cleaning, and characterization (surface metrology, damage conditioning, and photometry).

June 21, Wednesday Morning

Design-High Reflector Coatings, Dr. James B. Oliver: Dielectric reflectors: quarterwave stack, modified quarterwave stack, broad band reflectors. Order suppression, electric field profiles, rugate designs. Metal films, enhanced metal reflectors.

June 21, Wednesday Afternoon

Design-Band Pass Filters, Dr. James B. Oliver: Short and long wavelength and narrow band pass filters. Band pass filter design techniques: Herpin equivalent index, blocking methods. Metal-dielectric filters and graphical design techniques.

June 22, Thursday Morning

Design-Non-normal incidence, Dr. James B. Oliver: Polarization of light. Incidence angle effects on refractive index and filter design. Polarizing beam splitter and phase control coatings.

June 22, Thursday Afternoon

Methods of substrate motion in a deposition system, Dr. James B. Oliver: Modeling of thin-film uniformity, stresses in thin films, and process control for precision optical coatings.

June 23, Friday Morning

Optical Coatings & Color, Dr. David Glocker: Coating designs used in color applications: lighting, display, anti-counterfeiting and iridescent pigments, color targets, sunglasses, architectural, etc. Color spaces (i.e. 1931 Chromaticity Diagram, CIELuv, CIELab) and color difference formulas.

June 23, Friday Afternoon

Characterization of Optical Thin Films, Dr. James B. Oliver: Techniques of spectral measurement, determination of refractive index using various techniques; measurement of absorption, scatter and surface roughness, optical and electron microscopy techniques, methods of film analysis. Damage testing and measurement of stress and effect of coating stress on substrates.

{Please note: course descriptions and instructors listed above are NOT final, it is possible that circumstances beyond our control could necessitate alterations.}