Evidence of slow-light effects from rotary drag of structured beams
Self-pumped slow light, typically observed within laser gain media, is created by an intense pump field. By observing the rotation of a structured laser beam upon transmission through a spinning ruby window, we show that the slowing effect applies equally to both the dark and bright regions of the i...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/8/083020 |
| _version_ | 1797751380577878016 |
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| author | Emma Wisniewski-Barker Graham Gibson Sonja Franke-Arnold Zhimin Shi Robert W Boyd Miles J Padgett |
| author_facet | Emma Wisniewski-Barker Graham Gibson Sonja Franke-Arnold Zhimin Shi Robert W Boyd Miles J Padgett |
| author_sort | Emma Wisniewski-Barker |
| collection | DOAJ |
| description | Self-pumped slow light, typically observed within laser gain media, is created by an intense pump field. By observing the rotation of a structured laser beam upon transmission through a spinning ruby window, we show that the slowing effect applies equally to both the dark and bright regions of the incident beam. This result is incompatible with slow-light models based on simple pulse-reshaping arising from optical bleaching. Instead, the slow-light effect arises from the long upper-state lifetime of the ruby and a saturation of the absorption, from which the Kramers–Kronig relation gives a highly dispersive phase index and a correspondingly high group index. |
| first_indexed | 2024-03-12T16:47:40Z |
| format | Article |
| id | doaj.art-75c1260a474d425a97c8ce443065c8c4 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:47:40Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-75c1260a474d425a97c8ce443065c8c42023-08-08T11:28:52ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115808302010.1088/1367-2630/15/8/083020Evidence of slow-light effects from rotary drag of structured beamsEmma Wisniewski-Barker0Graham Gibson1Sonja Franke-Arnold2Zhimin Shi3Robert W Boyd4Miles J Padgett5Department of Physics and Astronomy, University of Glasgow , SUPA, Glasgow, UKDepartment of Physics and Astronomy, University of Glasgow , SUPA, Glasgow, UKDepartment of Physics and Astronomy, University of Glasgow , SUPA, Glasgow, UKThe Institute of Optics and Department of Physics and Astronomy, University of Rochester , Rochester, NY 14627, USA; Department of Physics, University of South Florida , Tampa, FL 33620, USAThe Institute of Optics and Department of Physics and Astronomy, University of Rochester , Rochester, NY 14627, USA; Department of Physics, University of Ottawa , Ottawa, Ontario, CanadaDepartment of Physics and Astronomy, University of Glasgow , SUPA, Glasgow, UKSelf-pumped slow light, typically observed within laser gain media, is created by an intense pump field. By observing the rotation of a structured laser beam upon transmission through a spinning ruby window, we show that the slowing effect applies equally to both the dark and bright regions of the incident beam. This result is incompatible with slow-light models based on simple pulse-reshaping arising from optical bleaching. Instead, the slow-light effect arises from the long upper-state lifetime of the ruby and a saturation of the absorption, from which the Kramers–Kronig relation gives a highly dispersive phase index and a correspondingly high group index.https://doi.org/10.1088/1367-2630/15/8/083020 |
| spellingShingle | Emma Wisniewski-Barker Graham Gibson Sonja Franke-Arnold Zhimin Shi Robert W Boyd Miles J Padgett Evidence of slow-light effects from rotary drag of structured beams New Journal of Physics |
| title | Evidence of slow-light effects from rotary drag of structured beams |
| title_full | Evidence of slow-light effects from rotary drag of structured beams |
| title_fullStr | Evidence of slow-light effects from rotary drag of structured beams |
| title_full_unstemmed | Evidence of slow-light effects from rotary drag of structured beams |
| title_short | Evidence of slow-light effects from rotary drag of structured beams |
| title_sort | evidence of slow light effects from rotary drag of structured beams |
| url | https://doi.org/10.1088/1367-2630/15/8/083020 |
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