Cavity-enhanced toroidal dipole force traps for dark-field seeking species |
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| Affiliation: | 1. Dipartimento di Fisica, Universit`a di Trento, Via Sommarive 14, Povo TN 38050, Italy;2. JF Allen Physics Research Laboratories, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9SS, Scotland, UK;1. Radiation and Matter Physics Laboratory, Matter Sciences Department, Mohamed-Cherif Messaadia University, P.O. Box 1553, Souk-Ahras, 41000, Algeria;2. Radiation Physics Laboratory, Department of Physics, Faculty of Sciences, Badji Mokhtar University, P.O. Box 12, 23000 Annaba, Algeria;3. School of Electronics and Information Engineering, Wuhan Donghu University, Wuhan 430212, People’s Republic of China;4. Department of Physics, Chemistry and Mathematics, Alabama A&M University, Normal, AL 35762, USA;5. Department of Mathematics and Statistics, College of Science, Al-Imam Mohammad Ibn Saud Islamic University, Riyadh 13318, Saudi Arabia;6. Department of Mathematics and Statistics, Tshwane University of Technology, Pretoria 0008, South Africa;7. Science Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar;1. Optimization and Systems Theory, Department of Mathematics, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden;2. Control and Simulation Center, Harbin Institute of Technology, 150001 Harbin, China;3. Key Laboratory of Systems and Control, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, 100190 Beijing, China;1. CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100190, China;3. School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China;4. International Centre for Theoretical Physics Asia-Pacific, Beijing/Hangzhou, China;1. Department of Mathematics, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom;2. Department of Mathematics and Statistics, University of Reading, Reading RG6 6AX, United Kingdom |
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| Abstract: | Dipole force traps for dark-field seeking states of atoms and molecules require regions of low intensity that are completely surrounded by a brighter optical field. Confocal cavities allow the resonant enhancement of these interesting transverse mode superpositions, and put deep far-off-resonance traps within reach of low-power diode lasers. In this paper, we show how an array of dark-field rings may be created simply using a single Gaussian beam. Such a geometry lends itself to the study of toroidal Bose–Einstein condensates. |
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