Programmable laser frequency stabilization at 1523 nm by use of persistent spectral hole burning

Abstract

Diode laser frequency stability of 2 kHz to 680 Hz over 20 ms to 500 s has been demonstrated at 1523 nm in the technologically important communication band by use of persistent spectral holes in the inhomogeneously broadened 4I15/24I13/2 optical absorption of Er3+: D-: CaF2 . Laser frequency stabilization was realized without vibrational or acoustical isolation of either the laser or spectral hole frequency reference, providing the means for implementing a versatile, compact, stable source.