Dual-Comb Spectroscopy Instrument for Remote Sensing

用于遥感的双梳光谱仪

• 批准号: 531846023
• 金额: --
• 依托单位: Ruprecht-Karls-Universität Heidelberg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/531846023?language=en
• 关键词: Dual; Comb; Spectroscopy; Instrument; Remote

Modern quantum technologies in atomic and molecular physics as well as quantum optics enable measurements in the environment at a new level of sensitivity and resolution, thus creating a knowledge base for sustainable resource use and effective and verifiable climate protection. Different methods have already found their way from being used in the context of investigating fundamental science questions to application in environmental physics. In Heidelberg we have already undertaken the step from single particle detection in quantum gas experiments to trace analysis at single atom level for dating of water and ice relevant in environmental science. With this proposal, we would like to undertake another step of transferring knowhow in the quantum optics community which is not yet at the stage of being directly commercially available for remote sensing i.e. dual comb spectroscopy. In recent years it has been demonstrated that dual comb spectroscopy (DCS) is applicable to remote sensing and we would like to apply and benchmark this method with state-of-the-art Fourier-transform spectroscopy available in Heidelberg. Here, we apply for a spectroscopy setup which allows for the first steps of entering in this technology and with that setting the stage for a new research direction in Heidelberg. This project will be pushed forward by a team of experts in the field of quantum optics (Prof. Oberthaler) and environmental physics and remote sensing (Prof. Butz). The instrument will consist of two ultra-stable frequency comb setups which are highly controlled and shall be locked to an absolute frequency standard to ensure mutual coherence. This is the prerequisite for transferring the spectral properties from the optical domain to the radio frequency domain directly detected with a single, fast and sensitive photon detector. The performance of the setup will be constantly monitored with a reference gas sample in the lab, which will also be used to explore new detection schemes to optimize signal to noise for certain molecular species. For remote sensing, the light output will be transferred to a long open-path setup over the city of Heidelberg, where special care and adaptions have to be installed to ensure the optimal performance of the dual comb spectroscopy. With the additional level of spectral control, the highest sensitivity for specific molecules will be implemented and will act as a test case for future specifically designed laser systems finding application in different monitoring and detecting campaigns in environmental physics. The dual-comb setup will act as the basis for further developments which ultimately will lead to a new level of quality of remote sensing building on quantum optical techniques.

原子和分子物理学以及量子光学领域的现代量子技术使环境测量的灵敏度和分辨率达到了新的水平，从而为可持续的资源利用和有效、可核查的气候保护创造了知识基础。不同的方法已经找到了自己的方式，从被用于调查基础科学问题的背景下，在环境物理学中的应用。在海德堡，我们已经从量子气体实验中的单粒子检测到环境科学中相关的水和冰的定年的单原子水平的痕量分析。有了这个提议，我们想在量子光学领域迈出另一步，这还没有达到直接用于遥感的商业化阶段，即双梳光谱。近年来，它已被证明，双梳光谱（DCS）是适用于遥感，我们想应用和基准这种方法与国家的最先进的傅里叶变换光谱可在海德堡。在这里，我们申请了一个光谱设置，允许进入这项技术的第一步，并为海德堡的新研究方向奠定了基础。该项目将由量子光学（Oberthaler教授）和环境物理学和遥感（Butz教授）领域的专家小组推进。该仪器将包括两个超稳定的频率梳设置，这两个频率梳设置是高度受控的，并应锁定在绝对频率标准上，以确保相互相干。这是将光谱特性从光域转移到射频域的先决条件，直接用单个快速灵敏的光子探测器探测。该装置的性能将在实验室中使用参考气体样品进行持续监测，该样品还将用于探索新的检测方案，以优化某些分子种类的信噪比。对于遥感，光输出将被转移到海德堡市的一个长的开放路径设置，在那里必须安装特殊的护理和适应，以确保双梳光谱的最佳性能。通过额外的光谱控制，将实现对特定分子的最高灵敏度，并将作为未来专门设计的激光系统的测试案例，用于环境物理学的不同监测和检测活动。双梳设置将作为进一步发展的基础，最终将导致建立在量子光学技术上的遥感质量的新水平。