论文标题
用于MIR光纤维的MIR光探测和运输的实验室测试
Laboratory tests for MIR light detection and transport with specialty optical fibres
论文作者
论文摘要
Riken Ral脉冲Muon设施的FAMU（Fisica degli atomi muonici）实验将以高精度测量质子Zemach半径，从而有助于溶解所谓的质子半径拼图。现在情况感到困惑，新的测量将有助于减少用电子或MUON测量的差异。为此，FAMU将在Riken-ral处利用高强度的脉冲MUON束在低温氢目标上撞击，并在6.78 um左右发射可调的中红外激光（MIR）激光，以测量Muonic氢的1 s状态的超细细胞（HFS）散布。将光注射到低温靶标及其通过专用miR传感器进行监测是实验的资产。一种可能的解决方案是通过基于空心核波导或多晶纤维的特种miR纤维。来自ALPES激光器的两个基于脉冲QCL激光器的专用设置已被用于研究纤维衰减，而Trieste的Elettra Sincrotrone在Elettra Sincrotrone开发的高能量激光已用于研究高能损伤阈值。由于几何约束，将miR激光辐射对光辐射对光腔的比对提出了关键。它的控制需要使用小而敏感的探测器。报道了用带有积分电路进行信号处理的量子IR传感器获得的结果。
The FAMU (Fisica degli Atomi Muonici) experiment at the RIKEN RAL pulsed muon facility will measure the proton Zemach radius with high precision, thus contributing to the solution of the so-called proton radius puzzle. The situation is now confused and new measurements will help reduce the discrepancy as measured with electrons or muons. To this aim, FAMU will make use of a high-intensity pulsed muon beam at RIKEN-RAL impinging on a cryogenic hydrogen target and a tunable Mid-infrared (MIR) laser emitting at around 6.78 um, to measure the hyperfine (HFS) splitting of the 1S state of muonic hydrogen. The injection of light into the cryogenic target and its monitoring via dedicated MIR sensors is an asset for the experiment. A possible solution is via specialty MIR fibres based on hollow core waveguides or polycrystalline fibres. Two dedicated setups based on pulsed QCL lasers, from Alpes Laser, emitting around 6.78 um have been used to study the fibre attenuation while the high energy laser developed at Elettra Sincrotrone in Trieste has been used to study the damage threshold at high energies. The alignment of MIR laser radiation into an optical cavity presents criticalities due to geometrical constraints. Its control requires the use of small and sensitive detectors. The results obtained with a quantum IR sensor with an integrated circuit for signal processing are reported.
