A mid-IR laser source for muonic hydrogen spectroscopy: The FAMU laser system

被引：0

作者：

Baruzzo, Marco ^{[1
,2
]}

Suarez-Vargas, Jose J. ^{[1
,2
]}

Stoychev, Lyubomir I. ^{[1
,10
]}

Cabrera, Humberto ^{[1
,3
]}

Gadedjisso-Tossou, Komlan S. ^{[3
,4
,5
]}

Toci, Guido ^{[7
]}

Moretti, Luigi ^{[8
,9
]}

Fasci, Eugenio ^{[8
,9
]}

Gianfrani, Livio ^{[8
,9
]}

Pizzolotto, Cecilia ^{[1
]}

Mocchiutti, Emiliano ^{[1
]}

Danailov, Miltcho B. ^{[6
]}

Vacchi, Andrea ^{[1
,2
]}

机构：

[1] Sez INFN Trieste, Via A Valerio 2, Trieste, Italy

[2] Univ Udine, Dipartimento Sci Matemat Informat & Fis, Via Sci 206, Udine, Italy

[3] Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, Trieste, Italy

[4] Univ Lome, Dept Phys, Lab Phys Mat & Composants Semicond LPMCS, 01 BP 1515, Lome, Togo

[5] Univ Lome, Ctr Excellence Reg Maitrise Electr CERME, 01 BP 1515, Lome, Togo

[6] Elettra Sincrotrone Trieste, SS14,Km 163-5, Basovizza, Italy

[7] Ist Nazl Ottica, Consiglio Nazl Ric, Via Madonna Piano 10, Sesto Fiorentino, Italy

[8] Complesso Univ Monte S Angelo, Sez INFN Napoli, Ed 6,Via Cintia, Naples, Italy

[9] Univ Campania Luigi Vanvitelli, Dipartimento Matemat & Fis, Viale Lincoln 5, Caserta, Italy

[10] Bulgarian Acad Sci, Inst Solid State Phys, Tzarigradsko Chaussee Blvd 72, Sofia 1784, Bulgaria

来源：

OPTICS AND LASER TECHNOLOGY | 2024年 / 179卷

关键词：

Mid-IR laser; FAMU; Muonic hydrogen spectroscopy; Laser control system; DFG; ENERGY;

D O I：

10.1016/j.optlastec.2024.111375

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A pulsed, tunable, narrow linewidth mid-infrared (mid-IR) laser radiation source was developed to meet the needs of the FAMU project (Fisica Atomi MUonici). The main goal of this experiment is to measure the hyperfine splitting of the ground state of muonic hydrogen using pulsed laser spectroscopy. The experiment requires a high energy, mid-IR source around the resonance energy Delta E1S(hfs) similar to 0.1828 eV (6.79 mu m) of the muonic hydrogen atom to excite it from the para (F = 0) to the ortho (F = 1) spin state. The laser system designed to fulfill these requirements is based on Difference Frequency Generation (DFG) using a non-linear crystal pumped by two laser beams at 1064 nm and 1262 nm. For the first time, the details of the entire laser system are described in this paper. The laser light at 6.79 mu m, generated with a BaGa4Se7 non-linear crystal, is being directed into the FAMU target multi-pass optical cavity. To date, an energy above 1 mJ, a linewidth below 30 pm, and a tunability step of 9 pm have all been attained. Here, we present the unique features of the laser system and the characterization results.

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页数：8

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