Small-sized Dichroic Atomic Vapor Laser Lock (DAVLL)

TL;DR

This paper introduces two compact, lightweight DAVLL systems for laser frequency stabilization, suitable for field experiments, with significant size reduction and maintained performance.

Contribution

The paper presents miniaturized DAVLL systems, including a novel micro-DAVLL, enabling portable and magnetically sensitive laser stabilization devices.

Findings

Mini-DAVLL is 49 mm long and does not need heaters.

Micro-DAVLL is 9 mm long with a micro-fabricated cell.

Performance remains comparable to larger designs.

Abstract

Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. A significant reduction in size and weight in both models supports the further miniaturization of measurement devices in the field. Similar to a previous design, magnetic-field lines are contained within a magnetic shield enclosing permanent magnets and a Rb cell, so that these DAVLL systems may be used for magnetically sensitive instruments. The Mini-DAVLL system (49 mm long) uses a vapor cell (20 mm long), and does not require cell heaters. An even smaller Micro-DAVLL system (9mm long) uses a micro-fabricated cell (3 mm square), and requires heaters. These new systems show no degradation in performance with regard to previous designs, while considerably reducing dimensions.