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Rugged mHz-Linewidth Superradiant Laser Driven by a Hot Atomic Beam.

Haonan Liu1, Simon B Jäger1, Xianquan Yu2

  • 1JILA, National Institute of Standards and Technology, and University of Colorado, Boulder, Colorado 80309-0440, USA.

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We introduce a novel continuous-wave superradiant laser using a hot atomic beam. Its performance rivals top ultracoherent lasers, offering a simple, rugged design for broad accessibility and challenging applications.

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Area of Science:

  • Atomic physics
  • Laser technology
  • Quantum optics

Background:

  • Superradiant lasers offer high coherence but often lack continuous-wave operation.
  • Existing ultracoherent lasers can be complex and fragile.
  • Atomic beam technology is crucial for precision spectroscopy.

Purpose of the Study:

  • To develop a novel superradiant laser system.
  • To achieve continuous-wave operation in a superradiant laser.
  • To create a simple, rugged, and accessible ultracoherent laser.

Main Methods:

  • Utilizing a hot atomic beam.
  • Integrating the atomic beam with an optical cavity.
  • Theoretical analysis of linewidth and power.

Main Results:

  • Demonstrated a new type of superradiant laser.
  • Achieved natural continuous-wave operation.
  • Theoretical performance is competitive with leading ultracoherent clock lasers in linewidth and power.

Conclusions:

  • The proposed laser design is simple and rugged.
  • It is a strong candidate for the first widely accessible ultracoherent laser.
  • Enables ultracoherent laser applications in challenging environments.