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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2511.15405 |
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| _version_ | 1866912718910390272 |
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| author | Liu, Meimei Zhu, Yuqi Gratta, Giorgio |
| author_facet | Liu, Meimei Zhu, Yuqi Gratta, Giorgio |
| contents | Off-axis parabolic mirrors (OAPs) are occasionally desirable for specialized applications, but are known to introduce field-dependent astigmatic aberrations. In an experiment where optical tweezers are formed by OAPs, another OAP is added to form a relay configuration with an optional microscope, resulting in near diffraction-limited performance, with a resolution of $2.19$ $μm$. The severe radially non-uniform distortion incurred by this configuration, with a long path length and a large field of view, requires software corrections for the microscopic image. To avoid overfitting given the limited features available for calibration at the tweezers focal plane, a distortion model with a reduced set of parameters is selected based on simulation data. Applying the model to experimental data, an average residual error of $3.60$ $μm$ ($1.33$ $μm$) is achieved in object space after the simple relay (adding a $5 \times$ microscope) over a field of approximately $1$ $μm$ $\times$ $1$ $μm$ ($200$ $μm$ $\times$ $200$ $μm$). The residual errors are likely dominated by diffraction artifacts in the features used for correction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_15405 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Large field-of-view, distortion-corrected off-axis parabolic mirror relay microscope Liu, Meimei Zhu, Yuqi Gratta, Giorgio Optics Off-axis parabolic mirrors (OAPs) are occasionally desirable for specialized applications, but are known to introduce field-dependent astigmatic aberrations. In an experiment where optical tweezers are formed by OAPs, another OAP is added to form a relay configuration with an optional microscope, resulting in near diffraction-limited performance, with a resolution of $2.19$ $μm$. The severe radially non-uniform distortion incurred by this configuration, with a long path length and a large field of view, requires software corrections for the microscopic image. To avoid overfitting given the limited features available for calibration at the tweezers focal plane, a distortion model with a reduced set of parameters is selected based on simulation data. Applying the model to experimental data, an average residual error of $3.60$ $μm$ ($1.33$ $μm$) is achieved in object space after the simple relay (adding a $5 \times$ microscope) over a field of approximately $1$ $μm$ $\times$ $1$ $μm$ ($200$ $μm$ $\times$ $200$ $μm$). The residual errors are likely dominated by diffraction artifacts in the features used for correction. |
| title | Large field-of-view, distortion-corrected off-axis parabolic mirror relay microscope |
| topic | Optics |
| url | https://arxiv.org/abs/2511.15405 |