Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment
The FAMU (Fisica degli Atomi MUonici) collaboration aims to measure the proton Zemach radius through muonic hydrogen (μp) spectroscopy. The experimental setup relies on a custom-developed pulsed mid-IR laser source that can be tuned over a specific 6780-6790 nm wavelength range needed to ignite the...
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_10023.pdf |
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| author | Baruzzo Marco Suárez-Vargas José J. Stoychev Lyubomir I. Cabrera Humberto Toci Guido Moretti Luigi Fasci Eugenio Gianfrani Livio Pizzolotto Cecilia Mocchiutti Emiliano Danailov Miltcho B. Vacchi Andrea |
| author_facet | Baruzzo Marco Suárez-Vargas José J. Stoychev Lyubomir I. Cabrera Humberto Toci Guido Moretti Luigi Fasci Eugenio Gianfrani Livio Pizzolotto Cecilia Mocchiutti Emiliano Danailov Miltcho B. Vacchi Andrea |
| author_sort | Baruzzo Marco |
| collection | DOAJ |
| description | The FAMU (Fisica degli Atomi MUonici) collaboration aims to measure the proton Zemach radius through muonic hydrogen (μp) spectroscopy. The experimental setup relies on a custom-developed pulsed mid-IR laser source that can be tuned over a specific 6780-6790 nm wavelength range needed to ignite the hyperfine transition of the μp ground state 1S (also known as spin-flip transition). The excitation is observed as a distinctive muonic X-rays emission resulting from the oxygen impurity present in the hydrogen target. The mid-IR emission is produced by Difference Frequency Generation (DFG) in a non-linear crystal, pumped with a fixed wavelength 1064 nm Nd-YAG laser and a tuneable Cr:forsterite laser centred on 1262 nm. This setup produces more than 1.2 mJ at 6780 nm with a linewidth smaller than 30 pm. The experiment requires the laser to run continuously 24/7 in a restricted/radiation-controlled area and for this reason a specifically developed control software permits to remotely act on the laser. The characterization of a series of different non-linear crystals was performed during the development of the laser, resulting in the choice of BaGa4Se7. |
| format | Article |
| id | doaj-art-a1265e01b78344d2abf6341d00228a86 |
| institution | OA Journals |
| issn | 2100-014X |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-a1265e01b78344d2abf6341d00228a862025-08-20T02:12:55ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013091002310.1051/epjconf/202430910023epjconf_eosam2024_10023Mid-IR narrow bandwidth tuneable laser source for the FAMU experimentBaruzzo Marco0Suárez-Vargas José J.1Stoychev Lyubomir I.2Cabrera Humberto3Toci Guido4Moretti Luigi5Fasci Eugenio6Gianfrani Livio7Pizzolotto Cecilia8Mocchiutti Emiliano9Danailov Miltcho B.10Vacchi Andrea11Sezione INFN di TriesteSezione INFN di TriesteSezione INFN di TriesteSezione INFN di TriesteConsiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica, CNR-INOSezione INFN di Napoli, Complesso Universitario di Monte S. Angelo ed. 6Sezione INFN di Napoli, Complesso Universitario di Monte S. Angelo ed. 6Sezione INFN di Napoli, Complesso Universitario di Monte S. Angelo ed. 6Sezione INFN di TriesteSezione INFN di TriesteElettra-Sincrotrone TriesteSezione INFN di TriesteThe FAMU (Fisica degli Atomi MUonici) collaboration aims to measure the proton Zemach radius through muonic hydrogen (μp) spectroscopy. The experimental setup relies on a custom-developed pulsed mid-IR laser source that can be tuned over a specific 6780-6790 nm wavelength range needed to ignite the hyperfine transition of the μp ground state 1S (also known as spin-flip transition). The excitation is observed as a distinctive muonic X-rays emission resulting from the oxygen impurity present in the hydrogen target. The mid-IR emission is produced by Difference Frequency Generation (DFG) in a non-linear crystal, pumped with a fixed wavelength 1064 nm Nd-YAG laser and a tuneable Cr:forsterite laser centred on 1262 nm. This setup produces more than 1.2 mJ at 6780 nm with a linewidth smaller than 30 pm. The experiment requires the laser to run continuously 24/7 in a restricted/radiation-controlled area and for this reason a specifically developed control software permits to remotely act on the laser. The characterization of a series of different non-linear crystals was performed during the development of the laser, resulting in the choice of BaGa4Se7.https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_10023.pdf |
| spellingShingle | Baruzzo Marco Suárez-Vargas José J. Stoychev Lyubomir I. Cabrera Humberto Toci Guido Moretti Luigi Fasci Eugenio Gianfrani Livio Pizzolotto Cecilia Mocchiutti Emiliano Danailov Miltcho B. Vacchi Andrea Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment EPJ Web of Conferences |
| title | Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment |
| title_full | Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment |
| title_fullStr | Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment |
| title_full_unstemmed | Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment |
| title_short | Mid-IR narrow bandwidth tuneable laser source for the FAMU experiment |
| title_sort | mid ir narrow bandwidth tuneable laser source for the famu experiment |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/19/epjconf_eosam2024_10023.pdf |
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