Title :
Tunable doughnut light beam for a near-field optical funnel of atoms
Author :
Iftiquar, S.M. ; Ito, H. ; Ohtsu, M.
Author_Institution :
ERATO Localized Photon Project, Japan Sci. & Technol. Corp., Tokyo, Japan
Abstract :
A doughnut-shaped Laguerre-Gaussian (LG) beam has been generated through interference of two spherical waves. The beam has a 5 mm bright ring and a 250-microns dark center suitable for our atom funnel experiment. The power conversion efficiency from a Gaussian mode to the LG mode is about 50%.
Keywords :
Gaussian processes; atomic beams; laser cooling; laser tuning; light interference; radiation pressure; atom funnel; bright ring; cold atomic beam; dark center; doughnut-shaped Laguerre-Gaussian beam; intensity profile; magneto-optical trap; near-field optical funnel; optical delay; power conversion efficiency; spherical waves interference; tunable doughnut light beam; Atom optics; Atomic beams; Charge coupled devices; Delay; Interference; Laser beams; Optical beams; Optical pumping; Shape measurement; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.968021
