All-fiber, near-infrared, laser system at 780nm for atom cooling

Abstract

One of the prominent platforms for quantum technologies, cold atoms require reliable laser systems. We present the design, implementation, and characterization of a simple, compact, and economical laser system at 780 nm, entirely based on fiber components. Two semiconductor lasers at 1560 nm are amplified in a single Erbium-doped fiber amplifier and frequency-doubled in a periodically-poled lithium niobate crystal. We characterize the amplitude noise and the linewidths of the lasers, as well as the SHG efficiency. With a rms relative amplitude noise of 3$\times$10${}^{-4}$ at 1 s and linewidths below 1 MHz, our system is suitable for cooling and trapping of Rb atoms.

13 pages, 15 figures, submitted to Optics Continuum, revised version of the manuscript after first round of peer-review

References in corpus (3)

• Interference-filter-stabilized external-cavity diode lasers
• An Ultra-High Stability, Low-Noise Laser Current Driver with Digital Control
• A 40 W, 780 nm laser system with compensated dual beam splitters for atom interferometry