Six-telescope integrated optics beam combiner fabricated using ultrafast laser inscription for J- and H-band astronomy
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866916977175429120 |
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| author | Dinkelaker, Aline N. Smarzyk, Sebastian Nayak, Abani S. Piacentini, Simone Corrielli, Giacomo Osellame, Roberto Pedretti, Ettore Roth, Martin M. Madhav, Kalaga |
| author_facet | Dinkelaker, Aline N. Smarzyk, Sebastian Nayak, Abani S. Piacentini, Simone Corrielli, Giacomo Osellame, Roberto Pedretti, Ettore Roth, Martin M. Madhav, Kalaga |
| contents | We have built and characterized the first six-telescope discrete beam combiner (DBC) for stellar interferometry in the astronomical J-band. It is the DBC with the largest number of beam combinations and was manufactured using ultrafast laser inscription (ULI) in borosilicate glass, with a throughput of approximately 56%. For calibration of the visibility-to-pixel matrix (V2PM), we use a two-input Michelson interferometer and extract the complex visibility. A visibility amplitude of 1.05 and relative precision of 2.9% and 3.8% are extracted for 1328 nm and 1380 nm, respectively. Broadband (< 40 nm) characterization is affected by dispersion, but shows similar performance. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2306_10575 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Six-telescope integrated optics beam combiner fabricated using ultrafast laser inscription for J- and H-band astronomy Dinkelaker, Aline N. Smarzyk, Sebastian Nayak, Abani S. Piacentini, Simone Corrielli, Giacomo Osellame, Roberto Pedretti, Ettore Roth, Martin M. Madhav, Kalaga Instrumentation and Methods for Astrophysics Optics We have built and characterized the first six-telescope discrete beam combiner (DBC) for stellar interferometry in the astronomical J-band. It is the DBC with the largest number of beam combinations and was manufactured using ultrafast laser inscription (ULI) in borosilicate glass, with a throughput of approximately 56%. For calibration of the visibility-to-pixel matrix (V2PM), we use a two-input Michelson interferometer and extract the complex visibility. A visibility amplitude of 1.05 and relative precision of 2.9% and 3.8% are extracted for 1328 nm and 1380 nm, respectively. Broadband (< 40 nm) characterization is affected by dispersion, but shows similar performance. |
| title | Six-telescope integrated optics beam combiner fabricated using ultrafast laser inscription for J- and H-band astronomy |
| topic | Instrumentation and Methods for Astrophysics Optics |
| url | https://arxiv.org/abs/2306.10575 |