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Fiber external-cavity injection laser with a dispersive single-mode coupler.

A G Bulushev, E M Dianov, Y V Gurov

|September 11, 2009

Summary

A novel injection laser with a dispersive cavity and single-mode coupler was designed. This laser achieves narrow-linewidth operation, producing 5 mW of output power for precise applications.

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Area of Science:

Optics and Photonics
Laser Technology

Background:

Achieving narrow-linewidth operation in injection lasers is crucial for various spectroscopic and telecommunication applications.
External cavity diode lasers (ECDLs) offer wavelength tunability but can be complex to stabilize.

Purpose of the Study:

To design and demonstrate an injection laser system utilizing an external dispersive cavity.
To employ a selective single-mode coupler as a mode discriminator for improved spectral purity.

Main Methods:

Design of an injection laser incorporating an external dispersive cavity.
Integration of a selective single-mode coupler to function as a mode discriminator.
Characterization of the laser's operational parameters, including linewidth and output power.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

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Main Results:

Successful design and implementation of the injection laser system.
Demonstration of narrow-linewidth laser operation.
Achieved a stable output power of 5 milliwatts (mW).

Conclusions:

The designed injection laser with an external dispersive cavity and single-mode coupler effectively achieves narrow-linewidth operation.
The system provides a stable output power of 5 mW, suitable for sensitive applications.
This design presents a viable approach for developing high-performance laser sources.