English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Optical cycling of AlF molecules

Hofsäss, S., Doppelbauer, M., Wright, S., Kray, S., Sartakov, B. G., Pérez-Ríos, J., et al. (2021). Optical cycling of AlF molecules. New Journal of Physics, 23(7): 075001. doi:10.1088/1367-2630/ac06e5.

Item is

Files

show Files
hide Files
:
Hofsäss_2021_New_J._Phys._23_075001.pdf (Publisher version), 4MB
Name:
Hofsäss_2021_New_J._Phys._23_075001.pdf
Description:
-
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2021
Copyright Info:
The Author(s)

Locators

show

Creators

show
hide
 Creators:
Hofsäss, Simon1, Author           
Doppelbauer, Maximilian1, Author           
Wright, Sidney1, Author           
Kray, Sebastian1, Author           
Sartakov, B. G.2, Author
Pérez-Ríos, Jesús1, Author           
Meijer, Gerard1, Author           
Truppe, Stefan1, Author           
Affiliations:
1Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
2Russian Acad Sci, Prokhorov Gen Phys Inst , Vavilovstr 38, Moscow 119991, Russia, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Aluminium monofluoride (AlF) is a promising candidate for laser cooling and trapping at high densities. We show efficient production of AlF in a bright, pulsed cryogenic buffer gas beam, and demonstrate rapid optical cycling on the Q rotational lines of the A1Π ↔ X1Σ+ transition. We measure the brightness of the molecular beam to be >1012 molecules per steradian per pulse in a single rotational state and present a new method to determine its velocity distribution in a single shot. The photon scattering rate of the optical cycling scheme is measured using three different methods, and is compared to theoretical predictions of the optical Bloch equations and a simplified rate equation model. Despite the large number of Zeeman sublevels (up to 216 for the Q(4) transition) involved, a high scattering rate of at least 17(2) × 106 s−1 can be sustained using a single, fixed-frequency laser without the need to modulate the polarisation. We deflect the molecu-lar beam using the radiation pressure force and measure an acceleration of 8.7(1.5) × 105 m s−2. Losses from the optical cycle due to vibrational branching to X1Σ+, v'' = 1 are addressed efficiently with a single repump laser. Further, we investigate two other loss channels, parity mixing by stray electric fields and photo-ionisation. The upper bounds for these effects are sufficiently low to allow loading into a magneto‐optical trap.

Details

show
hide
Language(s): eng - English
 Dates: 2021-03-252021-06-012021-07
 Publication Status: Published online
 Pages: 18
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/ac06e5
 Degree: -

Event

show

Legal Case

show

Project information

show hide
Project name : CoMoFun - Cold Molecules for Fundamental Physics
Grant ID : 949119
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

Source 1

show
hide
Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Bristol : IOP Publishing
Pages: 18 Volume / Issue: 23 (7) Sequence Number: 075001 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666