Research output per year
Research output per year
Personal profile
Personal information
See my personal website for personal information, news and scientific highlights.
Research
See this movie on my research: Rick Bethlem - Quantum Metrology & Laser Applications - Department of Physics and Astronomy
And this movie on the research in the QMLA group: Research section Quantum Metrology & Laser Applications - Department of Physics and Astronomy.
Ancillary activities
- Rijksuniversiteit Groningen | Groningen | Bijzonder hoogleraar | 2019-05-01 - 2029-04-30
Ancillary activities are updated daily
Keywords
- Q Science
- Laser cooling of molecules
- Cold molecules
- Molecular beam deceleration
- Cryogenic buffer gas source
- Electrostatic hexapole focusing
- Molecular fountain
- phase-space manipulation
- Precision spectroscopy
- Quantum metrology
- Optical frequency combs
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
-
SDG 7 Affordable and Clean Energy
Fingerprint
Dive into the research topics where HL Bethlem is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
- 1 Similar Profiles
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
-
Spectroscopy of He4 at 0.25 ppt Uncertainty and Improved Alpha-Helion Charge-Radius Difference Determination
Steinebach, K., Koelemeij, J. C. J., Bethlem, H. L. & Eikema, K. S. E., Jun 2026, In: Physical review letters. 136, 24, p. 1-8 8 p., 243001.Research output: Contribution to Journal › Article › Academic › peer-review
-
Statistics and systematics of electron EDM searches with BaF
Boeschoten, A., Marshall, V. R., Meijknecht, T. B., Touwen, A. P., Aggarwal, P., Balasubramanian, N., Bause, R., Bethlem, H. L., Borschevsky, A., Fikkers, T. H., Haase, P. A. B., Hao, Y., Hoekstra, S., van Hofslot, J. W. F., Jones, S. A., Jungmann, K., Levenga, J. E. J., Mooij, M. C., Mulder, H. & Nijman, B. A. & 9 others, , May 2026, In: European Physical Journal D. 80, 5, p. 1-11 11 p., 62.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
A cold beam of BaOH molecules using a water-vapor seeded neon gas
Fikkers, T. H., Balasubramanian, N., van Hofslot, J. W. F., Mooij, M. C., Bethlem, H. L. & Hoekstra, S., Feb 2026, In: New Journal of Physics. 28, 2, p. 1-11 11 p., 023202.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
A sub-ppm upper limit on the cosmological variations of the fine structure constant α
Muller, S., Beelen, A., Guélin, M., Black, J. H., Combes, F., Bethlem, H. L., Gérin, M., Henkel, C., Menten, K. M., Murphy, M. T., Ubachs, W. & Wozny, N., Feb 2026, In: Astronomy and Astrophysics. 706, p. 1-10 10 p., A365.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access -
2D transverse laser cooling of a hexapole focused beam of cold BaF molecules
NL-eEDM Collaboration, 2026, In: Communications Physics. 9, p. 1-10 10 p., 40.Research output: Contribution to Journal › Article › Academic › peer-review
Open Access