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Updated: May 19, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Ultranarrow linewidth photonic-atomic laser.

Wei Zhang¹, Liron Stern¹, David Carlson¹

¹National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.

Laser & Photonics Reviews

|May 18, 2026

Summary

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Researchers developed a compact, robust photonic-atomic laser using a Fabry-Perot cavity and rubidium vapor cell. This ultranarrow-linewidth laser offers high stability for precision measurements in various environments.

Area of Science:

Physics
Optical Engineering
Atomic Physics

Background:

High spectral purity lasers are crucial for applications like precision spectroscopy and quantum system manipulation.
Traditional methods for reducing laser linewidth often involve large, benchtop Fabry-Perot cavities, limiting miniaturization.
There's a growing need for compact, high-performance lasers suitable for ambient environments.

Purpose of the Study:

To develop a miniaturized, robust laser system combining photonic and atomic elements.
To achieve ultranarrow laser linewidths through a hybrid approach.
To demonstrate high frequency stability and vibration immunity in a compact package.

Main Methods:

Integration of a monolithic Fabry-Perot cavity (2.5 cm, 20,000 finesse) with a micromachined rubidium vapor cell.

Keywords:

Laser optics Laser stabilization Optical resonators

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

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Leveraging the short-term stability of the cavity and long-term stability of atoms for frequency stabilization.

Characterization of laser performance including fractional-frequency stability, integrated linewidth, and vibration immunity.

Main Results:

Achieved fractional-frequency stability of 1 × 10^-13 at 20 ms and 7 × 10^-13 at 300 s.
Demonstrated an integrated linewidth of 25 Hz and a frequency noise floor of 0.06 Hz²/Hz.
Exhibited passive vibration immunity as low as 10^-10/g.

Conclusions:

The developed photonic-atomic laser offers a compact and robust solution for ultranarrow-linewidth applications.
Hybrid systems integrating monolithic photonic and atomic packages show promise for advanced laser technologies.
This work paves the way for portable, high-performance laser systems for extended measurements in diverse conditions.