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HomeEventsOSSC May Meeting: Optical Monitoring for Thin Film Coating

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OSSC May Meeting: Optical Monitoring for Thin Film Coating

When:
Wednesday, May 08, 2019
Where:
The Proud Bird
The Proud Bird
11022 Aviation Blvd.
Los Angeles, CA  90045

(310) 670-3093
Contact:
Alex R Small
Category:
OSSC Regular Meeting
Registration is required
Payment In Advance Or At Event
Cancellation Policy:
Please let the Arrangements Chair ("Events@ossc.org") know as soon as possible.

Payments made in advance will normally be issued a credit that may be applied to future payments (membership or events). Please contact the Treasurer ("Treasurer@ossc.org") for assistance if this posses a significant burden.
Activities/Items    (Click the down-arrow to the left of the activity/item to view the details)
Presentation
Dinner
Sponsor a Student
Sponsor a Table
Donate to the OSSC (Suggested Donation)
Evolution of Optical Monitoring for Thin Film Coating

by
Wayne Rodgers, President, Eddy Co.
Abstract:  Multi-layer optical coatings play a key part in modern photonics, tailoring optical properties to create high-performance mirrors, low reflectivity surfaces, and wavelength or polarization dependent optics.  Without such coatings, many optical systems would not be practical, or even possible.  While multi-layer optical coating technology has developed tremendously since its inception in the 1940’s, there are still challenges that can lead to failed designs and require optimization by trial and error.
Much of the trial and error in coating design is driven by the difficulty in accurately specifying index dispersion for each material.  While index dispersion can be approximated by bulk index values or thin film measured values, for many this is insufficient to accurately design a coating without multiple iterations.  What is required is an accurate estimate of index dispersion produced by a particular coating technique on a particular machine.
The IDEM system provides a unique index calibration for each material and process used in particular machine.  IDEM then monitors the reflected vis/NIR spectrum (400nm-900nm), fitting the reflectivity curve derived for the layer’s calibrated index dispersion and the combined dispersion of the substrate and previous layers (IDEM can track more than four layers on one witness chip), rather than monitoring a key wavelength.  Additional benefits are continuous insight into system performance, and ability to restart a coating run after a system interruption. IDEM significantly increases the reliability and efficiency of creating multi-layer optical coatings, reducing lead-time and increasing cost margin.
About our speaker: Wayne’s involvement in the coating industry began in 1962, working at Infra-red Industries in Carpinteria.  This was followed by 4 years in the US Air Force, after which he joined the UCLA molecular beam lab, where he spent 15 years designing and building vacuum systems, spectrometers and particle detectors.  During this time, Wayne’s entrepreneurial spirit was awakened, and he founded the Eddy Co, and Select Coating Lab.  Since its creation, the Eddy Co has been a leader in multi-layer coating technology and scientific equipment design and development.
Networking, social hour: 6-7 pm
Dinner:  7-8 pm
(Members: $40,  non-members: $45,
OSSC Student Members: $20)
Presentation:  8pm
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The OSSC is a non-profit 501(C)3 tax exempt corporation.
The OSSC does NOT endorse candidates for public office or contribute to political candidates or campaigns.
Corporate Address:  14271 Jeffrey Road, Suite 136
Irvine, California 92620

Updated: 12 June 2019
Posted 2019 - 2020 Election Results