Design And Fabrication Of Optical Filters For Laser Frequency
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Author | : Samuel J. Holmes |
Publisher | : |
Total Pages | : 64 |
Release | : 1964 |
Genre | : |
ISBN | : |
Theoretical aspects, production methods, and evaluation techniques of narrow band optical filters, which employ a thin sheet of mica in place of the usual evaporated dielectric spacer layer, are described. Such filters have been made and are reported with half-widths of less than 2 A and with transmission on the order of 60%. In particular, details are given of the method of cleaving the mica sheets and the measurement of absorption. A filter holder is described which makes it possible to construct filters of practical size. Theoretical and experimental values are given for the angular sensitivity. Other properties discussed are the tunability, background, the spectral region for which they can be constructed, and the stability of the filters with time and with temperature changes. Recommendations for future work with such narrow band optical filters are presented and continuation of the program is recommended. (Author).
Author | : Samuel J. Holmes |
Publisher | : |
Total Pages | : 13 |
Release | : 1965 |
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Efforts were continued on a program to design and fabricate optical filters at three different laser wavelengths: the 6328 A helium-neon line, the 1.06 micron neodymium line, and the 3.5 micron neon-Xenon line. Filter Type I was designated to be helium-neon laser filter, centered at 6328 A with a half-power bandwidth of less than 2 A and peak transmission greater than 40%. (Author).
Author | : |
Publisher | : |
Total Pages | : 304 |
Release | : 1962 |
Genre | : Lasers |
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Author | : John-Michael Juneau |
Publisher | : |
Total Pages | : 164 |
Release | : 2017 |
Genre | : Light filters |
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The purpose of this thesis is to create a model for designing optical filters and a method for fabricating the designed filters onto a multitude of substrates, as well as to find ways to optimize this process. The substrates that were tested were quartz, glass slides, polycarbonate, and polyethylene terephthalate (PET). This work will account for variations in the deposition process and substrate cleaning method, in order to optimize the performance of the final optical filter. Several different filters were simulated and then fabricated. These filters included 3, 5, and 7-layer Bragg reflectors, 11-layer narrowband filters, and some variations of the 11-layer narrowband filter where the center layer is adjusted. This paper will highlight the steps involved in designing and simulating these filters, the steps involved in testing and optimizing their fabrication processes, and the tests and measurements determining their effectiveness. The effectiveness of the filters is determined by how high their maximum reflectivity and transmittance are, and in the case of narrowband filters by the width of the transmittance peak’s full width half max (FWHM).
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : 304 |
Release | : 1965 |
Genre | : Lasers |
ISBN | : |
Author | : |
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Total Pages | : 908 |
Release | : |
Genre | : Science |
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Author | : |
Publisher | : |
Total Pages | : 2180 |
Release | : 1964 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 704 |
Release | : 1995 |
Genre | : Aeronautics |
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Author | : |
Publisher | : |
Total Pages | : 40 |
Release | : 1983 |
Genre | : |
ISBN | : |
Author | : Emily Marie Fehrman Cory |
Publisher | : |
Total Pages | : 138 |
Release | : 2007 |
Genre | : Interference (Light) |
ISBN | : |