Heat evacuation from active Raman media using frequency-selective dissipative coupling
We propose to use frequency-selective dissipative coupling to reduce the heat generated by coherent anti-Stokes Raman scattering (CARS) reversed cycles in active Raman media with phase mismatch. This is accomplished using a coupled-waveguide structure, which includes the active Raman waveguide (RW),...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2021-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.013050 |
| _version_ | 1797211116763348992 |
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| author | Galina Nemova Christophe Caloz |
| author_facet | Galina Nemova Christophe Caloz |
| author_sort | Galina Nemova |
| collection | DOAJ |
| description | We propose to use frequency-selective dissipative coupling to reduce the heat generated by coherent anti-Stokes Raman scattering (CARS) reversed cycles in active Raman media with phase mismatch. This is accomplished using a coupled-waveguide structure, which includes the active Raman waveguide (RW), where the Stokes signal undergoes amplification via stimulated Stokes Raman scattering (SSRS), and a dissipative waveguide (DW), which is tuned to the anti-Stokes wavelength so as to evacuate the corresponding anti-Stokes photons from the RW by coupling. The DW introduces optical loss that partially offsets the growth of the anti-Stokes signal in the RW and hence suppress the reversed CARS cycles that would otherwise result into heat generation in the RW. It is shown that the frequency-selective dissipative coupling provided by the DW can reduce the heat in active Raman media by a very factor of up to 5 when the CARS phase mismatch is compensated for by the optimum level of coupling between the RW and the DW. |
| first_indexed | 2024-04-24T10:21:23Z |
| format | Article |
| id | doaj.art-3036368016eb4c499dfcc9cc68d32bd7 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:21:23Z |
| publishDate | 2021-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-3036368016eb4c499dfcc9cc68d32bd72024-04-12T17:06:25ZengAmerican Physical SocietyPhysical Review Research2643-15642021-01-013101305010.1103/PhysRevResearch.3.013050Heat evacuation from active Raman media using frequency-selective dissipative couplingGalina NemovaChristophe CalozWe propose to use frequency-selective dissipative coupling to reduce the heat generated by coherent anti-Stokes Raman scattering (CARS) reversed cycles in active Raman media with phase mismatch. This is accomplished using a coupled-waveguide structure, which includes the active Raman waveguide (RW), where the Stokes signal undergoes amplification via stimulated Stokes Raman scattering (SSRS), and a dissipative waveguide (DW), which is tuned to the anti-Stokes wavelength so as to evacuate the corresponding anti-Stokes photons from the RW by coupling. The DW introduces optical loss that partially offsets the growth of the anti-Stokes signal in the RW and hence suppress the reversed CARS cycles that would otherwise result into heat generation in the RW. It is shown that the frequency-selective dissipative coupling provided by the DW can reduce the heat in active Raman media by a very factor of up to 5 when the CARS phase mismatch is compensated for by the optimum level of coupling between the RW and the DW.http://doi.org/10.1103/PhysRevResearch.3.013050 |
| spellingShingle | Galina Nemova Christophe Caloz Heat evacuation from active Raman media using frequency-selective dissipative coupling Physical Review Research |
| title | Heat evacuation from active Raman media using frequency-selective dissipative coupling |
| title_full | Heat evacuation from active Raman media using frequency-selective dissipative coupling |
| title_fullStr | Heat evacuation from active Raman media using frequency-selective dissipative coupling |
| title_full_unstemmed | Heat evacuation from active Raman media using frequency-selective dissipative coupling |
| title_short | Heat evacuation from active Raman media using frequency-selective dissipative coupling |
| title_sort | heat evacuation from active raman media using frequency selective dissipative coupling |
| url | http://doi.org/10.1103/PhysRevResearch.3.013050 |
| work_keys_str_mv | AT galinanemova heatevacuationfromactiveramanmediausingfrequencyselectivedissipativecoupling AT christophecaloz heatevacuationfromactiveramanmediausingfrequencyselectivedissipativecoupling |