Laser spectroscopy of molecules
分子激光光谱
基本信息
- 批准号:14045219
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2005
- 资助国家:德国
- 起止时间:2004-12-31 至 2011-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have recently achieved reliable production of molecules with translational temperatures at the millikelvin level. One of the most promising applications for such ultracold molecules is high-resolution laser spectroscopy. In this project we will perform what will be, to our knowledge, the first experiment of this type. In particular, we will demonstrate laser spectroscopy of vibrational transitions in the HD+ molecule, concentrating on an overtone transition at a wavelength of 1.4(m . The HD+ molecule is of fundamental importance because it is one of the simplest molecules, containing just a single electron. Precise measurement of vibrational transition frequencies will ultimately allow (i) to test theoretical methods of precision calculation of molecular levels; (ii) to demonstrate the existence of QED effects in molecules; (iii) to determine the ratio of electron-to-proton mass in a novel way and with potentially higher precision than with alternative methods; (iv) to measure nuclear properties such as quadrupole moments, (v) to test the time-independence of nuclear mass ratios. The two-year goal consists in achieving a spectral resolution at a level of 10-8 such that the gross features of the hyperfine structure can be resolved, and in obtaining an absolute measurement of a few rotational-vibrational transition frequencies with a similar precision. This will be performed by means of a femtosecond frequency comb. An investigation of systematic effects will be performed in order to establish the accuracy. The methods developed in our project will also be applicable to a large variety of other molecular ions.
我们最近已经实现了分子的可靠生产,其平移温度在毫克尔文水平。这种超冷分子最有前途的应用之一是高分辨率激光光谱学。在这个项目中,据我们所知,我们将进行这种类型的第一次实验。特别是,我们将演示HD+分子中振动跃迁的激光光谱,集中在1.4(M)波长的泛音跃迁。HD+分子至关重要,因为它是最简单的分子之一,只包含一个电子。对振动跃迁频率的精确测量最终将使:(1)测试精确计算分子能级的理论方法;(2)证明分子中存在QED效应;(3)以一种新的方式确定电子与质子质量之比,并可能比用替代方法更精确;(4)测量核性质,如四极矩;(5)测试核质量比的时间无关性。两年的目标是达到10-8的光谱分辨率,以便能够分辨超精细结构的总体特征,并以类似的精度获得对几个转动-振动跃迁频率的绝对测量。这将通过飞秒频率梳来执行。为了确定准确性,将进行系统影响的调查。我们项目中开发的方法也将适用于许多其他分子离子。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Precision spectroscopy of molecular hydrogen ions : Towards frequency metrology of particle masses
分子氢离子的精密光谱:走向粒子质量的频率计量
- DOI:10.1007/978-3-540-75479-4_12
- 发表时间:2008
- 期刊:
- 影响因子:0
- 作者:B. Roth;J. Koelemeij;S. Schiller;L. Hilico;J.-P. Karr;V. Korobov;D. Bakalov
- 通讯作者:D. Bakalov
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Professor Stephan Schiller, Ph.D.其他文献
Professor Stephan Schiller, Ph.D.的其他文献
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{{ truncateString('Professor Stephan Schiller, Ph.D.', 18)}}的其他基金
Molecular frequency metrology: ultra-high precision spectroscopy of the rotational transition of HD+
分子频率计量:HD 旋转跃迁的超高精度光谱
- 批准号:
407129616 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Research Grants
A test of time dilation with an optical atomic clock on a stratospheric balloon
平流层气球上光学原子钟的时间膨胀测试
- 批准号:
323210209 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Development of ultra-stable cryogenic silicon optical resonators for laser frequency stabilization
开发用于激光频率稳定的超稳定低温硅光学谐振器
- 批准号:
279028307 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Research Grants
Test of Quantum Electrodynamics and mass metrology by high-resolution laser spectroscopy in hydrogen molecules:the molecular ion HD+
氢分子中高分辨率激光光谱测试量子电动力学和质量计量:分子离子 HD
- 批准号:
233970312 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Research Grants
Test of Lorentz Invariance at the 1 x 10-18 level with optical resonators
使用光学谐振器测试 1 x 10-18 级别的洛伦兹不变性
- 批准号:
241133855 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Research Grants
Ultra-high laser frequency stabilization using spectral holes in a cryogenically cooled crystal as a frequency reference
使用低温冷却晶体中的光谱孔作为频率参考实现超高激光频率稳定
- 批准号:
215187986 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
Development of tunable continuous-wave UV laser source of high spectral purity and demonstration of high-resolution spectroscopy
高光谱纯度可调谐连续波紫外激光源的开发及高分辨率光谱的演示
- 批准号:
161180076 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Research Grants
Spectroscopy of trapped ultracold complex molecular ions
捕获的超冷复合分子离子的光谱
- 批准号:
84231855 - 财政年份:2008
- 资助金额:
-- - 项目类别:
Research Grants
Frequency metrology of the HD+ molecular ion: THz and vibrational spectroscopy at the 10-10 accuracy level
HD 分子离子的频率计量:精度为 10-10 级的太赫兹和振动光谱
- 批准号:
66475571 - 财政年份:2008
- 资助金额:
-- - 项目类别:
Research Grants
High-precision test of isotropy of light propagation using actively rotated optical resonators
使用主动旋转光学谐振器高精度测试光传播的各向同性
- 批准号:
19760781 - 财政年份:2006
- 资助金额:
-- - 项目类别:
Research Grants
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