Resonance-free Fabry-Pérot cavity via unrestricted orbital-angular-momentum ladder-up
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910880180994048 |
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| author | Yaraghi, Shaghayegh Mhibik, Oussama Yessenov, Murat Miller, J. Keith Parto, Midya Johnson, Eric G. Abouraddy, Ayman F. Divliansky, Ivan |
| author_facet | Yaraghi, Shaghayegh Mhibik, Oussama Yessenov, Murat Miller, J. Keith Parto, Midya Johnson, Eric G. Abouraddy, Ayman F. Divliansky, Ivan |
| contents | Introducing elements into an optical cavity that modify the transverse spatial field structure can also impact the cavity spectral response. In particular, an intra-cavity spatial mode-converter is expected to induce modal runaway: unrestricted ladder-up in the modal order, concomitantly thwarting coherent field interference, thereby altogether suppressing the resonant response - a phenomenon that has yet to be observed in an optical cavity. Here we show that a single intra-cavity holographic phase mask placed in a compact free-standing planar Fabry-Pérot cavity renders the cavity spectral response resonance-free. By acting as a mode-converter on a basis of Laguerre-Gaussian (LG) modes, an incident broadband fundamental Gaussian mode exits the cavity in the form of a superposition of a large number of collinearly propagating broadband LG modes of fixed parity whose spectra coincide with that of the input. Crucially, the resonance-free spectral response is maintained while changing the cavity length by $\sim350\%$, raising the prospect of stable resonant optical sensors whose performance is impervious to length perturbations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_13712 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resonance-free Fabry-Pérot cavity via unrestricted orbital-angular-momentum ladder-up Yaraghi, Shaghayegh Mhibik, Oussama Yessenov, Murat Miller, J. Keith Parto, Midya Johnson, Eric G. Abouraddy, Ayman F. Divliansky, Ivan Optics Introducing elements into an optical cavity that modify the transverse spatial field structure can also impact the cavity spectral response. In particular, an intra-cavity spatial mode-converter is expected to induce modal runaway: unrestricted ladder-up in the modal order, concomitantly thwarting coherent field interference, thereby altogether suppressing the resonant response - a phenomenon that has yet to be observed in an optical cavity. Here we show that a single intra-cavity holographic phase mask placed in a compact free-standing planar Fabry-Pérot cavity renders the cavity spectral response resonance-free. By acting as a mode-converter on a basis of Laguerre-Gaussian (LG) modes, an incident broadband fundamental Gaussian mode exits the cavity in the form of a superposition of a large number of collinearly propagating broadband LG modes of fixed parity whose spectra coincide with that of the input. Crucially, the resonance-free spectral response is maintained while changing the cavity length by $\sim350\%$, raising the prospect of stable resonant optical sensors whose performance is impervious to length perturbations. |
| title | Resonance-free Fabry-Pérot cavity via unrestricted orbital-angular-momentum ladder-up |
| topic | Optics |
| url | https://arxiv.org/abs/2503.13712 |