Work

Laser frequency stabilization using a spatially multiplexed microfabricated Rb vapor cell

Year: 2026

Type: article

Abstract: We demonstrate a laser stabilization based on a spatially-multiplexed, microfabricated rubidium vapor cell. This design integrates multiple optical apertures within a cell, enabling a single input beam to simultaneously capture both Doppler-broadened and saturated absorption spectroscopy signals while a dedicated non-absorbing aperture directs the beam toward the physics package. We achieve a frequency stability of 4 × 10 −13 at 100 s, and partial correction of the Doppler background allows the system to remain stable at the 10 −12 -level up to 10 4 s. This architecture significantly reduces optical complexity while providing a robust, high-performance laser source for deployable quantum sensors.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/ae5f5a