Guided Quasicontinuous Atom Laser

TL;DR

This paper reports the first realization of a guided quasicontinuous atom laser, using rf outcoupling from a Bose-Einstein condensate into a waveguide, maintaining a constant de Broglie wavelength and good mode matching.

Contribution

It introduces a novel guided quasicontinuous atom laser setup that cancels gravity effects and ensures mode matching, advancing atom laser technology.

Findings

Maintains de Broglie wavelength at 0.5 μm for 0.1 s

Cancels acceleration due to gravity in atom laser propagation

Ensures intrinsically good transverse mode matching

Abstract

We report the first realization of a guided quasicontinuous atom laser by rf outcoupling a Bose-Einstein condensate from a hybrid optomagnetic trap into a horizontal atomic waveguide. This configuration allows us to cancel the acceleration due to gravity and keep the de Broglie wavelength constant at 0.5 $\mu$m during 0.1 s of propagation. We also show that our configuration, equivalent to pigtailing an optical fiber to a (photon) semiconductor laser, ensures an intrinsically good transverse mode matching.