30 to 50 ns liquid-crystal optical switches
The optical switching times of liquid-crystal cells using 5CB, 5OCB and PCH5 liquid crystal materials have been characterized as a function of applied voltage, V, and temperature, T. The transition time from 90 to 10 % transmission scales as V-2 and is limited to 50 to 30 ns by the breakdown electri...
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| Format: | Article |
| Language: | en_US |
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SPIE
2010
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| Online Access: | http://hdl.handle.net/1721.1/58583 |
| _version_ | 1826214697446146048 |
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| author | Osgood, Richard M. Kimball, B. R. Geis, Michael W. Turner, George W. Lyszczarz, Theodore M. Molnar, Richard J. |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Osgood, Richard M. Kimball, B. R. Geis, Michael W. Turner, George W. Lyszczarz, Theodore M. Molnar, Richard J. |
| author_sort | Osgood, Richard M. |
| collection | MIT |
| description | The optical switching times of liquid-crystal cells using 5CB, 5OCB and PCH5 liquid crystal materials have been characterized as a function of applied voltage, V, and temperature, T. The transition time from 90 to 10 % transmission scales as V-2 and is limited to 50 to 30 ns by the breakdown electric field, ~ 106 V cm-1 of the liquid crystal. The time from the initial voltage step to 90 % transmission, delay time, decreases with increasing voltage and approaches a constant value at higher electric fields, >105 V cm-1. Both the transition and delay times decrease with increasing temperature. The minimum transition times at temperatures a few degrees below the nematic-isotropic temperature are 32, 32, and 44 ns and delay times are 44, 25 and 8 ns for 5CB, 5OCB, and PCH5 respectively. |
| first_indexed | 2024-09-23T16:09:54Z |
| format | Article |
| id | mit-1721.1/58583 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:09:54Z |
| publishDate | 2010 |
| publisher | SPIE |
| record_format | dspace |
| spelling | mit-1721.1/585832022-10-02T06:46:52Z 30 to 50 ns liquid-crystal optical switches Osgood, Richard M. Kimball, B. R. Geis, Michael W. Turner, George W. Lyszczarz, Theodore M. Molnar, Richard J. Lincoln Laboratory Lyszczarz, Theodore M. Geis, Michael W. Turner, George W. Lyszczarz, Theodore M. Molnar, Richard J. liquid crystal optical switches The optical switching times of liquid-crystal cells using 5CB, 5OCB and PCH5 liquid crystal materials have been characterized as a function of applied voltage, V, and temperature, T. The transition time from 90 to 10 % transmission scales as V-2 and is limited to 50 to 30 ns by the breakdown electric field, ~ 106 V cm-1 of the liquid crystal. The time from the initial voltage step to 90 % transmission, delay time, decreases with increasing voltage and approaches a constant value at higher electric fields, >105 V cm-1. Both the transition and delay times decrease with increasing temperature. The minimum transition times at temperatures a few degrees below the nematic-isotropic temperature are 32, 32, and 44 ns and delay times are 44, 25 and 8 ns for 5CB, 5OCB, and PCH5 respectively. U. S. Army Natick Soldier Research Development and Engineering Center (Air Force Contract FA8721-05-C-0002) 2010-09-17T14:25:46Z 2010-09-17T14:25:46Z 2010-02 2010-01 Article http://purl.org/eprint/type/JournalArticle 0277-786X http://hdl.handle.net/1721.1/58583 M. W. Geis, R. J. Molnar, G. W. Turner, T. M. Lyszczarz, R. M. Osgood, and B. R. Kimball (2010). 30 to 50 ns liquid-crystal optical switches. Proc. SPIE 7618: 76180J/1-5. ©2010 COPYRIGHT SPIE--The International Society for Optical Engineering en_US http://dx.doi.org/10.1117/12.840281 Proceedings of SPIE--the International Society for Optical Engineering; v.7618 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf SPIE SPIE |
| spellingShingle | liquid crystal optical switches Osgood, Richard M. Kimball, B. R. Geis, Michael W. Turner, George W. Lyszczarz, Theodore M. Molnar, Richard J. 30 to 50 ns liquid-crystal optical switches |
| title | 30 to 50 ns liquid-crystal optical switches |
| title_full | 30 to 50 ns liquid-crystal optical switches |
| title_fullStr | 30 to 50 ns liquid-crystal optical switches |
| title_full_unstemmed | 30 to 50 ns liquid-crystal optical switches |
| title_short | 30 to 50 ns liquid-crystal optical switches |
| title_sort | 30 to 50 ns liquid crystal optical switches |
| topic | liquid crystal optical switches |
| url | http://hdl.handle.net/1721.1/58583 |
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