Unconventional modes in lasers with spatially varying gain and loss
We discuss a class of lasing modes created by a spatially inhomogeneous gain profile. These lasing modes are “extra modes,” in addition to, and very different from, conventional lasing modes, which arise from the passive cavity resonances. These new modes do not have high intensity across the entire...
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sg-ntu-dr.10356-1011592023-02-28T19:29:43Z Unconventional modes in lasers with spatially varying gain and loss Rotter, S. Türeci, H. E. Ge, Li Chong, Yidong Stone, A. Douglas School of Physical and Mathematical Sciences DRNTU::Science::Physics We discuss a class of lasing modes created by a spatially inhomogeneous gain profile. These lasing modes are “extra modes,” in addition to, and very different from, conventional lasing modes, which arise from the passive cavity resonances. These new modes do not have high intensity across the entire gain region, but instead are localized at the gain boundary and throughout the gain-free region. They are surface modes, originating from the transmission resonances of the gain-free region. Using an S -matrix description we connect these surface modes to the lasing modes in PT -symmetric (balanced gain-loss) cavities. Published version 2013-12-19T08:41:33Z 2019-12-06T20:34:19Z 2013-12-19T08:41:33Z 2019-12-06T20:34:19Z 2011 2011 Journal Article Ge, L., Chong, Y., Rotter, S., Türeci, H. E.,& Stone, A. D. (2011). Unconventional modes in lasers with spatially varying gain and loss. Physical review A, 84(2), 023820. https://hdl.handle.net/10356/101159 http://hdl.handle.net/10220/18337 10.1103/PhysRevA.84.023820 en Physical review A ©2011 American Physical Society. This paper was published in Physical Review A and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: http://dx.doi.org/10.1103/PhysRevA.84.023820. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf |
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DRNTU::Science::Physics Rotter, S. Türeci, H. E. Ge, Li Chong, Yidong Stone, A. Douglas Unconventional modes in lasers with spatially varying gain and loss |
| description |
We discuss a class of lasing modes created by a spatially inhomogeneous gain profile. These lasing modes are “extra modes,” in addition to, and very different from, conventional lasing modes, which arise from the passive cavity resonances. These new modes do not have high intensity across the entire gain region, but instead are localized at the gain boundary and throughout the gain-free region. They are surface modes, originating from the transmission resonances of the gain-free region. Using an S -matrix description we connect these surface modes to the lasing modes in PT -symmetric (balanced gain-loss) cavities. |
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School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Rotter, S. Türeci, H. E. Ge, Li Chong, Yidong Stone, A. Douglas |
| format |
Article |
| author |
Rotter, S. Türeci, H. E. Ge, Li Chong, Yidong Stone, A. Douglas |
| author_sort |
Rotter, S. |
| title |
Unconventional modes in lasers with spatially varying gain and loss |
| title_short |
Unconventional modes in lasers with spatially varying gain and loss |
| title_full |
Unconventional modes in lasers with spatially varying gain and loss |
| title_fullStr |
Unconventional modes in lasers with spatially varying gain and loss |
| title_full_unstemmed |
Unconventional modes in lasers with spatially varying gain and loss |
| title_sort |
unconventional modes in lasers with spatially varying gain and loss |
| publishDate |
2013 |
| url |
https://hdl.handle.net/10356/101159 http://hdl.handle.net/10220/18337 |
| _version_ |
1759854110804279296 |