Monolithic bowtie cavity traps for ultra-cold gases

Abstract

We report on trapping and cooling Li-6 atoms in a monolithic ring bowtie cavity. To make the cavity insensitive to magnetic fields used to tune atomic interactions, we constructed it entirely from fused silica and Zerodur. The components were assembled using hydroxide bonding, which we show can be compatible with ultra-high vacuum. Backscattering in high-finesse ring cavities readily causes trap intensity fluctuations and heating, but with phase-controlled bi-directional pumping the trap lifetime can be made long enough for quantum gas experiments in both the crossed-beam trap (unidirectional pump) and 2D lattice trap (bidirectional pump) configurations.

15 pages, 5 figures To be published JOSA B Nov. 2020

References in corpus (5)

• Cold atoms in cavity-generated dynamical optical potentials
• Efficient all-optical production of large ${}^6$Li quantum gases using D${}_1$ gray-molasses cooling
• Cavity-enhanced superradiant Rayleigh scattering with ultra-cold and Bose-Einstein condensed atoms
• Collective strong coupling of cold potassium atoms in a ring cavity
• Controlling mode locking in optical ring cavities

Cited by in corpus (1)

• Crossed optical cavities with large mode diameters