Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 35: Cold Molecules I (joint session MO/Q)

Q 35.2: Talk

Wednesday, March 11, 2020, 14:15–14:30, f102

The diatomic molecular spectroscopy database for laser cooling and trapping — •Xiangyue Liu, Stefan Truppe, Gerard Meijer, and Jesus Perez-Rios — Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany

Convenient access to the spectroscopic constants of molecules is essential for the screening of potential candidates for laser cooling and trapping techniques. To this end, we present a user-friendly database-driven website that provides the ground and excited states spectroscopy constants of polar diatomic molecules, implemented with Linux, Apache, MySQL, and PHP (LAMP) on the back end. The Franck-Condon factors, which directly determine the transition probabilities between two vibrational states, are directly calculated from the spectroscopic constants. In this website, the user can either search for the spectroscopic constants from the web page user interface or access freely to the data from the application programming interface (API). In the API, the data is given in in lightweight data-interchange formats, including JSON and CSV. The user, after registration, is also allowed to contribute to the database. We believe that this database may advance the research in molecular spectroscopy and, ultimately, in ultracold molecules.