Low peak-power pulse compression in gas-filled Herriott cells in the 2 μm wavelength range
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914516693942272 |
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| author | Meyer, Johann Gabriel Ritzkowsky, Felix Ghaffari, Fatemehsadat Schwarz, Kevin Kovalenko, Nazar Franke, Christian Trabattoni, Andrea Pronin, Oleg |
| author_facet | Meyer, Johann Gabriel Ritzkowsky, Felix Ghaffari, Fatemehsadat Schwarz, Kevin Kovalenko, Nazar Franke, Christian Trabattoni, Andrea Pronin, Oleg |
| contents | At laser wavelengths longer than the prominent 1 μm range of high-power ytterbium-doped lasers, nonlinear phase shifts produced in nonlinear media for spectral broadening and subsequent pulse compression decrease drastically. Consequently, at the 2 μm wavelength range, the threshold of the applicable peak power for pulse compression in gas-filled multipass cells increases. The common approach of choosing a Herriott multipass cell configuration close to the concentric resonator does not necessarily lead to the highest total nonlinear phase shift, due to a restriction of the total number of reflections on the cell mirrors of a given size. Therefore, an analytical approach is presented here to maximize the nonlinear phase shift for a given set of mirrors, considering lossless and dispersionless propagation. Furthermore, to achieve pulse compression with gas-filled multipass cells for relatively low peak powers at wavelengths around 2 μm, we developed a high-pressure gas cell and demonstrated experimentally pulse compression in the negative- and positive dispersion regimes, with achieved pulse durations of around 40 fs and 55 fs respectively. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_26585 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Low peak-power pulse compression in gas-filled Herriott cells in the 2 μm wavelength range Meyer, Johann Gabriel Ritzkowsky, Felix Ghaffari, Fatemehsadat Schwarz, Kevin Kovalenko, Nazar Franke, Christian Trabattoni, Andrea Pronin, Oleg Optics At laser wavelengths longer than the prominent 1 μm range of high-power ytterbium-doped lasers, nonlinear phase shifts produced in nonlinear media for spectral broadening and subsequent pulse compression decrease drastically. Consequently, at the 2 μm wavelength range, the threshold of the applicable peak power for pulse compression in gas-filled multipass cells increases. The common approach of choosing a Herriott multipass cell configuration close to the concentric resonator does not necessarily lead to the highest total nonlinear phase shift, due to a restriction of the total number of reflections on the cell mirrors of a given size. Therefore, an analytical approach is presented here to maximize the nonlinear phase shift for a given set of mirrors, considering lossless and dispersionless propagation. Furthermore, to achieve pulse compression with gas-filled multipass cells for relatively low peak powers at wavelengths around 2 μm, we developed a high-pressure gas cell and demonstrated experimentally pulse compression in the negative- and positive dispersion regimes, with achieved pulse durations of around 40 fs and 55 fs respectively. |
| title | Low peak-power pulse compression in gas-filled Herriott cells in the 2 μm wavelength range |
| topic | Optics |
| url | https://arxiv.org/abs/2604.26585 |