Frequency stabilization of multiple lasers to a reference atomic transition of Rb

Abstract

Modern atomic clocks based on the interrogation of an atomic transitions in the optical regions require multiple lasers at different wavelength for producing atomic ions, trapping and laser cooling of neutral atoms or atomic ions. In order to achieve highest efficiency for laser cooling or any other atomic transition, frequencies of each of the lasers involved need to be stabilized by mitigating its drifts or fluctuations arise due to ambient temperature variation or other kind of perturbations. The present article describes simultaneous frequency stabilization of multiple number of lasers, required for production and laser cooling of ytterbium (171Yb) ions, to a reference transition frequency of rubidium (Rb) atoms. In this technique, a diode laser operating at ~ 780 nm is frequency stabilized to one of the Doppler broadening-free absorption peak of rubidium atoms (85Rb) and then used as a reference frequency for calibrating a wavelength meter and subsequent simultaneous frequency stabilization of four lasers operating at different wavelengths.

Realization of temperature-insensitive energy band-gap based on nanowire-well quantum systems for thermally frequency-stable laser diodes

“…Nowadays, as is well known, frequency references and controls are generally indispensable for numerous systems, 1,2 and thus frequency-stable laser sources have been widely applied in many fields, such as atomic clocks, [3][4][5] optical communications, 6 light detection and ranging, 7 precision experiments, 8 and highperformance microwave generation. 9 Ultra-stable laser frequencies have served as the prerequisite behind these optical applications.…”