Collaborative Research: An Agile Electro-Optic Frequency Comb for Precision Near-Infrared Radial Velocity Spectroscopy with the Habitable Zone Planet Finder

合作研究：用于精确近红外径向速度光谱的敏捷电光频率梳与宜居带行星探测器

• 批准号: 2009982
• 负责人: Scott Diddams
• 金额: $ 49.55万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009982&HistoricalAwards=false
• 关键词: Collaborative; Research; Agile; Electro; Optic

This research project will focus on improving tools for finding and studying planets around nearby stars, referred to as exoplanets. Such a search is driven by questions about origins, the uniqueness of Earth, and the potential for other life in the galaxy. A method to find planets around other stars involves looking for periodic changes in the spectrum (color) of the light emitted by a star as the planet circles it. These color changes are far too small to be discerned by a human eye; detecting them requires special tools. For this purpose, an advanced laser frequency comb, which is like an ultra-precise ruler for light waves, will be built and used with an instrument on a telescope called the Habitable Zone Planet Finder. Together, these tools will measure the very small changes in the color of starlight needed to discover exoplanets. This project will push the limits of technology as it applies advances from the 2005 and 2019 Nobel Prizes in Physics to the goal of finding planets. This cross-disciplinary and collaborative research project looks to advance a broad range of photonic and astronomical instrumentation tools that are critical for exoplanet science. This includes the introduction of new modalities for laser frequency combs, and there use to push the precision of radial velocity spectroscopy in the near-infrared to below 1 m/s. Improved overall instrument precision will in turn open avenues to address other barriers to precise radial velocities, such as stellar activity and telluric contamination. The result of this work will address such challenges in the much-less-developed NIR and will provide the tools required to discover habitable zone planets around cooler M-dwarfs. The potential of laser frequency combs for enabling in-situ detector characterization and precise radial velocities is substantial and wide-ranging. The proposed collaborative research brings together astronomers, instrument builders, and laser physicists to demonstrate new functionality for a laser frequency comb that will advance the technology beyond a static ‘picket fence’ calibrator to a user-defined comb with dynamically-tunable frequencies and amplitudes that will enable study of the properties of the HxRG infrared detector arrays that are used across astronomical disciplines. These gains will significantly enhance the capabilities of an existing telescope and facility, and will also demonstrate technology for the future generation of precision RV spectrometers and other astronomical instruments.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该研究项目将着重于在附近的恒星周围研究行星，这被称为系外行星。恒星作为行星发出的光的频谱（颜色）的周期性变化太小了。波浪将被建造，并将其用于望远镜的望远镜。纪律和协作研究项目旨在推进针对激光频率梳子的广泛的光子和天文学工具。近于1 m/s的临时仪器的整体钢笔都可以在精确的径向速度上，这项工作的结果将在众多的NIRL中增加挑战。在冷却器的M型warfs周围的行星。昏迷的频率和膨胀将使跨越天文学的HXRG红外探测器阵列的性能显着增强现有望远镜和设施HNOLOGY的能力。该奖项反映了NSF'SF'SFTORY任务，并通过使用基金会的知识分子优点和更广泛的影响标准评估来反映NSF'SF'SF'SFTORY任务。

项目成果

Ultraviolet to Near-infrared Frequency Comb Generation in Lithium Niobate Nanophotonic Waveguides with Chirped Poling

利用啁啾极化在铌酸锂纳米光子波导中产生紫外到近红外频率梳

• DOI: 10.1364/cleo_qels.2022.fw4j.2
• 发表时间: 2022
• 期刊: Conference on Lasers and Electro-Optics
• 作者: Wu, Tsung-Han;Ledezma, Luis;Fredrick, Connor;Sekhar, Pooja;Sekine, Ryoto;Guo, Qiushi;Briggs, Ryan;Marandi, Alireza;Diddams, Scott A.
• 通讯作者: Diddams, Scott A.

Fiber-Integrated Supercontinuum with a 20 GHz Resonant Electro-Optic Frequency Comb

具有 20 GHz 谐振电光频率梳的光纤集成超连续谱

• DOI: 10.1364/cleo_si.2021.stu2d.2
• 发表时间: 2021
• 期刊: Conference on Lasers and Electro-Optics
• 作者: Sekhar, Pooja;Fredrick, Connor;Leifer, Stephanie;Diddams, Scott A.
• 通讯作者: Diddams, Scott A.

Thermal-light heterodyne spectroscopy with frequency comb calibration

• DOI: 10.1364/optica.440389
• 发表时间: 2022-02-20
• 期刊: OPTICA
• 影响因子: 10.4
• 作者: Fredrick，Connor;Olsen，Freja;Diddams，Scott A.
• 通讯作者: Diddams，Scott A.

Noise Suppression in a 10 GHz Octave-Spanning Frequency Comb

10 GHz 倍频程频率梳中的噪声抑制

• DOI: 10.1109/ipc53466.2022.9975623
• 发表时间: 2022
• 期刊: 2022 IEEE Photonics Conference (IPC
• 作者: Sekhar, Pooja;Fredrick, Connor;Wu, Tsung-Han;Swartz, Stephanie;Diddams, Scott A.
• 通讯作者: Diddams, Scott A.