Practical lineshape of a laser operating near an exceptional point
Abstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are ma...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-03-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-85665-w |
| _version_ | 1818978414293417984 |
|---|---|
| author | Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An |
| author_facet | Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An |
| author_sort | Jinuk Kim |
| collection | DOAJ |
| description | Abstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of the laser exhibits a splitting in the vicinity of the EP although the cavity eigenfrequencies coalesce at the EP. |
| first_indexed | 2024-12-20T16:43:15Z |
| format | Article |
| id | doaj.art-e249de2fe356490ea05ff20b59650f77 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-20T16:43:15Z |
| publishDate | 2021-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-e249de2fe356490ea05ff20b59650f772022-12-21T19:33:00ZengNature PortfolioScientific Reports2045-23222021-03-0111111010.1038/s41598-021-85665-wPractical lineshape of a laser operating near an exceptional pointJinuk Kim0Juman Kim1Jisung Seo2Kyu-Won Park3Songky Moon4Kyungwon An5Department of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityFaculty of Liberal Education, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityAbstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of the laser exhibits a splitting in the vicinity of the EP although the cavity eigenfrequencies coalesce at the EP.https://doi.org/10.1038/s41598-021-85665-w |
| spellingShingle | Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An Practical lineshape of a laser operating near an exceptional point Scientific Reports |
| title | Practical lineshape of a laser operating near an exceptional point |
| title_full | Practical lineshape of a laser operating near an exceptional point |
| title_fullStr | Practical lineshape of a laser operating near an exceptional point |
| title_full_unstemmed | Practical lineshape of a laser operating near an exceptional point |
| title_short | Practical lineshape of a laser operating near an exceptional point |
| title_sort | practical lineshape of a laser operating near an exceptional point |
| url | https://doi.org/10.1038/s41598-021-85665-w |
| work_keys_str_mv | AT jinukkim practicallineshapeofalaseroperatingnearanexceptionalpoint AT jumankim practicallineshapeofalaseroperatingnearanexceptionalpoint AT jisungseo practicallineshapeofalaseroperatingnearanexceptionalpoint AT kyuwonpark practicallineshapeofalaseroperatingnearanexceptionalpoint AT songkymoon practicallineshapeofalaseroperatingnearanexceptionalpoint AT kyungwonan practicallineshapeofalaseroperatingnearanexceptionalpoint |