A Total Internal Reflection Photoconductive Switch
We demonstrate a novel illumination technique for extrinsic photoconductive switches based on the creation of a total internal reflection trap to increase the optical path length. The optimal geometry is a square substrate illuminated from one of the corners along the diagonal, ensuring that the tot...
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| Veröffentlicht in: | IEEE electron device letters 2019-05, Vol.40 (5), p.734-737 |
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| container_end_page | 737 |
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| container_issue | 5 |
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| container_title | IEEE electron device letters |
| container_volume | 40 |
| creator | Bora, Mihail Voss, Lars F. Grivickas, Paulius V. Hall, David L. Alameda, Jennifer B. Kramer, Noah J. Torres, Andrea M. Conway, Adam M. |
| description | We demonstrate a novel illumination technique for extrinsic photoconductive switches based on the creation of a total internal reflection trap to increase the optical path length. The optimal geometry is a square substrate illuminated from one of the corners along the diagonal, ensuring that the total internal reflection condition is maintained after any reflection off the device lateral sides. The optical absorption uniformity throughout the device bulk was improved by designing the entry window to have a cylindrical shape and by using a square core optical fiber as an illumination source. The concept is experimentally validated on a vanadium-doped silicon carbide device that shows approximately four-fold improvement in responsivity compared to normal illumination. |
| doi_str_mv | 10.1109/LED.2019.2903926 |
| format | Article |
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(LLNL), Livermore, CA (United States)</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>IEEE electron device letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Bora, Mihail</au><au>Voss, Lars F.</au><au>Grivickas, Paulius V.</au><au>Hall, David L.</au><au>Alameda, Jennifer B.</au><au>Kramer, Noah J.</au><au>Torres, Andrea M.</au><au>Conway, Adam M.</au><aucorp>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Total Internal Reflection Photoconductive Switch</atitle><jtitle>IEEE electron device letters</jtitle><stitle>LED</stitle><date>2019-05-01</date><risdate>2019</risdate><volume>40</volume><issue>5</issue><spage>734</spage><epage>737</epage><pages>734-737</pages><issn>0741-3106</issn><eissn>1558-0563</eissn><coden>EDLEDZ</coden><abstract>We demonstrate a novel illumination technique for extrinsic photoconductive switches based on the creation of a total internal reflection trap to increase the optical path length. The optimal geometry is a square substrate illuminated from one of the corners along the diagonal, ensuring that the total internal reflection condition is maintained after any reflection off the device lateral sides. 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| identifier | ISSN: 0741-3106 |
| ispartof | IEEE electron device letters, 2019-05, Vol.40 (5), p.734-737 |
| issn | 0741-3106 1558-0563 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1558851 |
| source | IEEE Electronic Library (IEL) |
| subjects | Absorption CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Illumination Lighting Optical fibers Optical reflection Optical switches Optical trapping photoconductivity Reflection Silicon carbide Substrates Switches total internal reflection |
| title | A Total Internal Reflection Photoconductive Switch |
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