High-resolution rapid-scanning Fourier transform spectroscopy of ultracold atoms.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-07-01 DOI:10.1364/OL.565541

Friedemann Landmesser, Nicolai Gölz, Ulrich Bangert, Tobias Sixt, Lukas Bruder

引用次数: 0

Abstract

Femtosecond (fs) interferometry combined with acousto-optical phase modulation is an effective approach to implement various types of coherent nonlinear and multidimensional spectroscopy schemes. Here, we focus on gaseous and ultracold samples and compare directly the performance and spectral resolution between two experimental implementations of the phase modulation technique, which are stepwise and continuous rapid scanning of the underlying Fourier transform (FT) interferometers. We show the performance advantage of the rapid-scanning approach and demonstrate a spectral resolution of 250 MHz in the spectroscopy of laser-cooled Li atoms. This is a 10-fold resolution improvement compared to previous experiments.

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超冷原子的高分辨率快速扫描傅立叶变换光谱。

飞秒干涉与声光相位调制相结合是实现各种相干非线性和多维光谱方案的有效途径。在这里，我们将重点放在气体和超冷样品上，并直接比较两种相位调制技术的实验实现之间的性能和光谱分辨率，这两种技术是对底层傅里叶变换（FT）干涉仪的逐步和连续快速扫描。我们展示了快速扫描方法的性能优势，并在激光冷却锂原子的光谱中展示了250 MHz的光谱分辨率。与以前的实验相比，这是10倍的分辨率提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.