Production of Ultracold XOH (X = Ca, Sr, Ba) Molecules by Direct Laser Cooling: A Theoretical Study Based on Accurate Ab Initio Calculations.

Jingbo Wei, Peng Li, Jizhou Wu, Yuqing Li, Wenliang Liu, Yongming Fu, Jie Ma

Abstract read

In one paragraph

Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Jingbo WeiState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.

Peng LiState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.ORCID 0000-0001-8868-9743

Jizhou WuState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.ORCID 0000-0003-0299-8938

Yuqing LiState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.

Wenliang LiuState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.

Yongming FuState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.ORCID 0000-0002-7543-4327

Jie MaState Key Laboratory of Quantum Optics Technologies and Devices, Institute of Laser Spectroscopy, College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.

Funding

National Natural Science Foundation of China 11604187, U2167206, 61722507, 61675121 and 61705123Natural Science Young Foundation of Shanxi Province 201801D221004Russian Foundation for Basic Research (RFBR) and the National Natural Science Foundation of China (NSFC) No. 20-53-53025 in the RFBR classification and No. 62011530047 in the NSFC classification

6 · The paper itself

Abstract

Effective laser cooling schemes are fundamental for preparing ultracold triatomic molecules. Here, efficient laser cooling strategies for alkaline-earth hydroxides (XOH, X = Ca, Sr, Ba) are proposed using high-precision quantum calculations. By mapping Λ-S- and Ω-state potential energy surfaces, we identified quasi-closed optical cycles with dominant Franck-Condon factors (FCFs) and strong transition dipoles. The scheme utilizes targeted repumping to suppress vibrational leaks, enabling >10

Indexed as

ab initio calculationsdirect laser coolingFranck–Condon factorstransition channeltriatomic molecule

Identifiers

PMID40363757

DOI10.3390/molecules30091950

PMCPMC12073337

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