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Proceedings Article

Digitized rugate filters for laser rejection

[+] Author Affiliations
John Allen, B. Herrington

Omitec Thin Films Ltd. (United Kingdom)

Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, 126 (November 2, 1993); doi:10.1117/12.163542
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From Conference Volume 2046

  • Inhomogeneous and Quasi-Inhomogeneous Optical Coatings
  • Jerzy A. Dobrowolski; Pierre G. Verly
  • Quebec City, Canada | August 16, 1993

abstract

The paper describes the design and manufacturing techniques used to produce digitized rugate filters for laser rejection in an ophthalmic microscope. The design is synthesized from the refractive index profile necessary to give the required bandwidth, attenuation and angle of incidence constraints. Process control using quartz crystal deposition and broadband diode array radiometer to monitor real time thin film growth is described. The results are presented showing close agreement between theoretical design and measured spectral performance. Further work to extend this technique to multiple laser line rejection is outlined.

© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

John Allen and B. Herrington
"Digitized rugate filters for laser rejection", Proc. SPIE 2046, Inhomogeneous and Quasi-Inhomogeneous Optical Coatings, 126 (November 2, 1993); doi:10.1117/12.163542; http://dx.doi.org/10.1117/12.163542


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