We demonstrate an optical bottle beam trap created by interfering two fundamental Gaussian beams with different waists. The beams are derived from a single laser source using a Mach–Zehnder interferometer whose arms have unequal magnifications. Destructive interference of the two beams from the Mach–Zehnder leads to a three-dimensional intensity null at the mutual focus of the beams. We demonstrate trapping of cold cesium atoms in a blue detuned bottle beam trap.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: January 16, 2009
Manuscript Accepted: February 25, 2009
Published: April 6, 2009
L. Isenhower, W. Williams, A. Dally, and M. Saffman, "Atom trapping in an interferometrically generated bottle beam trap," Opt. Lett. 34, 1159-1161 (2009)