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Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes [dataset] Open Access
We show that the lifetime of ultracold ground-state $^{87}$Rb$^{133}$Cs molecules in an optical trap is limited by fast optical excitation of long-lived two-body collision complexes. We partially suppress this loss mechanism by applying square-wave modulation to the trap intensity, such that the molecules spend 75% of each modulation cycle in the dark. By varying the modulation frequency, we show that the lifetime of the collision complex is $0.53\pm0.06$ ms in the dark. We find that the rate of optical excitation of the collision complex is $3^{+4}_{-2}\times10^{3}$ W$^{-1}$ cm$^2$ s$^{-1}$ for $\lambda = 1550$ nm, leading to a lifetime of <100 ns for typical trap intensities. These results explain the two-body loss observed in experiments on nonreactive bialkali molecules.
Descriptions
- Resource type
- Dataset
- Contributors
- Creator:
Gregory, Philip
1
Data collector: Gregory, Philip 1
Data curator: Gregory, Philip 1
Editor: Gregory, Philip 1
Contact person: Cornish, Simon 1
1 Durham University, United Kingdom
- Funder
-
UK Engineering and Physical Sciences Research Council (EPSCR)
- Research methods
- Other description
- Keyword
- Ultracold molecular collisions
Collision complexes
RbCs
- Subject
- Location
- Language
- Cited in
- doi:10.1103/PhysRevLett.124.163402
- Identifier
- ark:/32150/r2j9602061h
doi:10.15128/r2j9602061h
- Rights
- Creative Commons Attribution 4.0 International (CC BY)
- Publisher
-
Durham University
- Date Created
File Details
- Depositor
- P.D. Gregory
- Date Uploaded
- 7 February 2020, 19:02:58
- Date Modified
- 21 October 2020, 13:10:46
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- Audits have not yet been run on this file.
- Characterization
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File format: zip (ZIP Format)
Mime type: application/zip
File size: 1881
Last modified: 2020:02:07 19:33:05+00:00
Filename: Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes.zip
Original checksum: e5eddef69cdfde83ad9fc07031de22b3
| User Activity | Date |
|---|---|
| User N. Syrotiuk has updated Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes [dataset] | over 3 years ago |
| User N. Syrotiuk has updated Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes [dataset] | over 3 years ago |
| User P.D. Gregory has updated Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes [dataset] | over 3 years ago |
| User P.D. Gregory has updated Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes [dataset] | over 3 years ago |