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Simple method for locking birefringent resonators.

Adam Libson, Nicolas Brown, Aaron Buikema

|April 4, 2015

Summary

This summary is machine-generated.

A new polarization spectroscopy method simplifies laser locking to birefringent cavities. This technique uses one polarization state as a reference, reducing complexity for fiber ring resonators.

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Area of Science:

Optics and Photonics
Laser Physics
Spectroscopy

Background:

Laser stabilization is crucial for many scientific applications.
Traditional laser locking methods often require complex modulation techniques.
Birefringent optical resonators offer unique properties for light manipulation.

Purpose of the Study:

To develop a simplified method for locking lasers to birefringent cavities.
To reduce the complexity of laser locking setups by eliminating modulation.
To demonstrate a versatile technique applicable to various birefringent resonators, especially fiber ring resonators.

Main Methods:

Utilizing polarization spectroscopy to generate an error signal.
Employing the inherent birefringence of a resonator to create a phase reference.
Implementing a direct error signal extraction without light or resonator modulation.

Main Results:

A simple and effective error signal was extracted using polarization states.
The method successfully locked a laser to a fiber ring resonator.
The technique proved robust even with unknown birefringence characteristics.

Conclusions:

The developed polarization spectroscopy method offers a simplified approach to laser locking.
This technique is particularly advantageous for fiber ring resonators with unknown birefringence.
The absence of modulation significantly reduces the complexity of the laser locking system.