1. Implementation of a stable, high-power optical lattice for quantum gas microscopy
- Author
-
Florian Huber, Christie S. Chiu, Markus Greiner, Maxwell Parsons, Geoffrey Ji, Sebastian Blatt, Anton Mazurenko, and Daniel Greif
- Subjects
Materials science ,Atomic Physics (physics.atom-ph) ,Gaussian ,High Energy Physics::Lattice ,FOS: Physical sciences ,01 natural sciences ,Molecular physics ,Physics - Atomic Physics ,010305 fluids & plasmas ,law.invention ,symbols.namesake ,Lattice constant ,law ,Lattice (order) ,0103 physical sciences ,Microscopy ,Instrumentation ,010302 applied physics ,Quantum Physics ,Optical lattice ,Laser ,Nonlinear system ,Quantum Gases (cond-mat.quant-gas) ,symbols ,Condensed Matter - Quantum Gases ,Quantum Physics (quant-ph) ,Beam (structure) - Abstract
We describe the design and implementation of a stable high-power 1064 nm laser system to generate optical lattices for experiments with ultracold quantum gases. The system is based on a low-noise laser amplified by an array of four heavily modified, high-power fiber amplifiers. The beam intensity is stabilized and controlled with a nonlinear feedback loop. Using real-time monitoring of the resulting optical lattice, we find the stability of the lattice site positions to be well below the lattice spacing over the course of hours. The position of the harmonic trap produced by the Gaussian envelope of the lattice beams is stable to about one lattice spacing and the long-term (six-month) relative RMS stability of the lattice spacing itself is 0.5%., Comment: 13 pages, 13 figures
- Published
- 2019