Doppler-free frequency modulation spectroscopy of atomic erbium in a hollow cathode discharge cell

Abstract

The erbium atomic system is a promising candidate for an atomic Bose-Einstein condensate of atoms with a non-vanishing orbital angular momentum ($L\ne 0$) of the electronic ground state. In this paper we report on the frequency stabilization of a blue external cavity diode laser system on the 400.91 $nm$ laser cooling transition of atomic erbium. Doppler-free saturation spectroscopy is applied within a hollow cathode discharge tube to the corresponding electronic transition of several of the erbium isotopes. Using the technique of frequency modulation spectroscopy, a zero-crossing error signal is produced to lock the diode laser frequency on the atomic erbium resonance. The latter is taken as a reference laser to which a second main laser system, used for laser cooling of atomic erbium, is frequency stabilized.

References in corpus (5)

• Controlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms
• Atomic quantum gases in Kagomé lattices
• Atomic Landau-Zener tunneling in Fourier-synthesized optical lattices
• Fourier synthesis of optical potentials for atomic quantum gases
• Magneto-Optical Trap for Thulium Atoms

Cited by in corpus (4)

• Hyperfine structure of laser-cooling transitions in fermionic erbium-167
• Bose-Einstein condensation of erbium atoms in a quasielectrostatic optical dipole trap
• Tunable frequency-stabilization of UV laser using a Hallow-Cathode Lamp of atomic thallium
• Polarization spectroscopy of atomic erbium in a hollow cathode lamp