Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium
We report on experimental and theoretical demonstrations of an optical comb spectrum based on a combination of cascaded stimulated Raman scattering and four-wave mixing mediated by Raman-induced nonresonant Kerr-type nonlinearity. This combination enabled us to transform a conventional quasiperiodic...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.023025 |
| _version_ | 1797211494816940032 |
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| author | Aurélien Benoît Anton Husakou Benoît Beaudou Benoît Debord Frédéric Gérôme Fetah Benabid |
| author_facet | Aurélien Benoît Anton Husakou Benoît Beaudou Benoît Debord Frédéric Gérôme Fetah Benabid |
| author_sort | Aurélien Benoît |
| collection | DOAJ |
| description | We report on experimental and theoretical demonstrations of an optical comb spectrum based on a combination of cascaded stimulated Raman scattering and four-wave mixing mediated by Raman-induced nonresonant Kerr-type nonlinearity. This combination enabled us to transform a conventional quasiperiodic Raman comb into a comb with a single and smaller frequency spacing. This phenomenon is achieved using a hollow-core photonic crystal fiber filled with 40 bars of deuterium and pumped with a high-power picosecond laser. The resultant comb shows more than 100 spectral lines spanning over 220 THz from 800 nm to 1710 nm, with a total output power of 7.1 W. In contrast to a pure Raman comb, a 120 THz wide portion of the spectrum exhibits denser and equally spaced spectral lines with a frequency spacing of around 1.75 THz, which is much smaller than the lowest frequency of the three excited deuterium Raman resonances. A numerical solution of the generalized nonlinear Schrödinger equation in the slowly varying envelope approximation provides very good agreement with the experimental data. The additional sidebands are explained by cascaded four-wave mixing between preexisting spectral lines, mediated by the large Raman-induced optical nonlinearity. The use of such a technique for coherent comb generation is discussed. The results show a route to the generation of optical frequency combs that combine large bandwidth and high power controllable frequency spacing. |
| first_indexed | 2024-04-24T10:27:23Z |
| format | Article |
| id | doaj.art-c1aed31ad98d402b8d2c1a55478d72f8 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:27:23Z |
| publishDate | 2020-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-c1aed31ad98d402b8d2c1a55478d72f82024-04-12T16:52:30ZengAmerican Physical SocietyPhysical Review Research2643-15642020-04-012202302510.1103/PhysRevResearch.2.023025Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas mediumAurélien BenoîtAnton HusakouBenoît BeaudouBenoît DebordFrédéric GérômeFetah BenabidWe report on experimental and theoretical demonstrations of an optical comb spectrum based on a combination of cascaded stimulated Raman scattering and four-wave mixing mediated by Raman-induced nonresonant Kerr-type nonlinearity. This combination enabled us to transform a conventional quasiperiodic Raman comb into a comb with a single and smaller frequency spacing. This phenomenon is achieved using a hollow-core photonic crystal fiber filled with 40 bars of deuterium and pumped with a high-power picosecond laser. The resultant comb shows more than 100 spectral lines spanning over 220 THz from 800 nm to 1710 nm, with a total output power of 7.1 W. In contrast to a pure Raman comb, a 120 THz wide portion of the spectrum exhibits denser and equally spaced spectral lines with a frequency spacing of around 1.75 THz, which is much smaller than the lowest frequency of the three excited deuterium Raman resonances. A numerical solution of the generalized nonlinear Schrödinger equation in the slowly varying envelope approximation provides very good agreement with the experimental data. The additional sidebands are explained by cascaded four-wave mixing between preexisting spectral lines, mediated by the large Raman-induced optical nonlinearity. The use of such a technique for coherent comb generation is discussed. The results show a route to the generation of optical frequency combs that combine large bandwidth and high power controllable frequency spacing.http://doi.org/10.1103/PhysRevResearch.2.023025 |
| spellingShingle | Aurélien Benoît Anton Husakou Benoît Beaudou Benoît Debord Frédéric Gérôme Fetah Benabid Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium Physical Review Research |
| title | Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium |
| title_full | Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium |
| title_fullStr | Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium |
| title_full_unstemmed | Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium |
| title_short | Raman-Kerr comb generation based on parametric wave mixing in strongly driven Raman molecular gas medium |
| title_sort | raman kerr comb generation based on parametric wave mixing in strongly driven raman molecular gas medium |
| url | http://doi.org/10.1103/PhysRevResearch.2.023025 |
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