Ukrainian Journal of Physical Optics


2026 Volume 27, Issue 2


ISSN 1816-2002 (Online), ISSN 1609-1833 (Print)

VIBRATIONAL COOLING OF RbCs MOLECULES

Omama Al Kharusi, Ridha Horchani, Uduakobong S. Okorie and Akpan N. Ikot

Author Information
1,2,TOmama Al Kharusi SCOPUS logo, 1,*Ridha Horchani ORCID logo SCOPUS logo, 3Uduakobong S. Okorie ORCID logo SCOPUS logo, 4Akpan N. Ikot ORCID logo SCOPUS logo
1Department of Physics, College of Science, Sultan Qaboos University, P.O. Box 36, Al-Khod, P. C. 123, Muscat, Sultanate of Oman
2Department of Applied Mathematics and Science, National University of Science and Technology, Al Hail, Al Seeb, 111, Muscat, Sultanate of Oman
3Department of Physics, University of South Africa, Florida, 1710, Johannesburg, South Africa
4Theoretical Physics Group, Department of Physics, University of Port Harcourt, Rivers State, Nigeria

ABSTRACT

We theoretically investigate the vibrational cooling of RbCs molecules formed via the photoassociation of Rb and Cs atoms. A sample of cold molecules, initially distributed across multiple vibrational levels, can be transferred into a specific vibrational level of the singlet ground electronic state, X1∑+. This is achieved by repeated optical pumping with a laser light spectrum broad enough to excite all populated vibrational levels except the target one. The results show that this cooling method achieves an efficiency of nearly 90 %

Keywords: optical pumping, vibrational cooling, molecules

UDC: 621.373.826

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    Теоретично досліджене коливне охолодження молекул RbCs, утворених внаслідок фотоасоціації атомів Rb та Cs. Холодні молекули, спочатку розподілені по кількох коливних рівнях, можуть бути переведеними на певний коливний рівень синглетного основного електронного стану X1∑+. Це досягається шляхом багаторазового оптичного нагнітання лазерним випромінюванням зі спектром, достатньо широким для збудження всіх заселених коливних рівнів крім цільового. Як свідчать отримані результати, ефективність цього методу охолодження може наближатися до 100%. оптичне нагнітання, коливне охолодження, молекули

    Ключові слова: оптичне нагнітання, коливне охолодження, молекули

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