A method of laser frequency stabilization based on the effect of linear dichroism in alkali metal vapors in a modulated transverse magnetic field

Abstract

We present a method of laser frequency stabilization based on the linear dichroism signal in a transverse magnetic field. The method is similar to the DAVLL (Dichroic Atomic Vapor Laser Lock) method. It differs from DAVLL and from its existing modifications primarily by the fact that it uses signal of linearly polarized light caused by alignment, rather than circular refraction caused by orientation, and therefore allows to obtain error signals at the magnetic field modulation frequency (or its second harmonic) by extremely simple means. The method does not require the strong magnetic fields or careful shielding of the working cell. The method allows the laser frequency to be stabilized in the vicinity of the low-frequency transition in the D1 line of Cs. Although the absorption line in a gas-filled cell is typically gigahertz wide, the achievable resolution, limited by the signal-to-noise ratio of photon shot noise, can reach tens of kilohertz in one hertz bandwidth.

11 pages, 9 figures

References in corpus (15)

• Optical Magnetometry
• Sensitivity Optimization for NV-Diamond Magnetometry
• Single-Ion Atomic Clock with $3\times 10^{-18}$ Systematic Uncertainty
• Resolving the gravitational redshift within a millimeter atomic sample
• Diamond magnetometer enhanced by ferrite flux concentrators
• Testing gravity with cold atom interferometry: Results and prospects
• Microwave-free magnetometry with nitrogen-vacancy centers in diamond
• Compact chip-scale guided cold atom gyrometers for inertial navigation: Enabling technologies and design study
• Advanced Laser Technology for Quantum Communications (Tutorial Review)
• Quantum control of molecules for fundamental physics
• Off resonance laser frequency stabilization using the Faraday effect
• Single-beam all-optical non-zero field magnetometric sensor for magnetoencephalography applications
• Dichroic atomic vapor laser lock with multi-gigahertz stabilization range
• Small-sized Dichroic Atomic Vapor Laser Lock (DAVLL)
• A tunable Doppler-free dichroic lock for laser frequency stabilization

Cited by in corpus (3)

• Anomalous suppression of spin-exchange relaxation in alignment signals in cesium in ultra-weak magnetic fields
• Bistability of optical properties of cesium vapor due to collective interaction of alignment and orientation under strong spin exchange conditions
• Linear dichroism signals due to the alignment in the ground state of hydrogen-like atoms and their inversion in a single-beam optical pumping scheme