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Cutoff interference polymer-crystalline multilayer systems with the passband edge smooth tuning
The smooth tuning possibility of the passband edge in an interference polymer-crystalline cutoff filter has been studied. This is attained by using the periodic polymer (£) — germanium (H) structures of uneven optical thickness, i.e., the systems of the [[HH±C)(L±C)k(L±C)k(H±C) type where H and L ar...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
НТК «Інститут монокристалів» НАН України
2005
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| Series: | Functional Materials |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/139736 |
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| Summary: | The smooth tuning possibility of the passband edge in an interference polymer-crystalline cutoff filter has been studied. This is attained by using the periodic polymer (£) — germanium (H) structures of uneven optical thickness, i.e., the systems of the [[HH±C)(L±C)k(L±C)k(H±C) type where H and L are quarter-wave layers of high and low refractive index, respectively; C in the thickness unequality parameter; k, an integer. The effect of the C value variation from 0 to 0.3 H on the optical properties of polyethylene-germanium interference structures have been studied theoretically and in experiment. A method has been developed to smooth the secondary extremes in the uneven thickness polyethylene-germanium systems by adding auxiliary polyethylene interference layers. |
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