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Updated: Jun 19, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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Spatiotemporal period doubling in a nonlinear interferometer with distributed optical feedback.

A V Larichev, I P Nikolaev, A L Chulichkov

|October 31, 2009

Summary

Nonlinear interferometers exhibit spatial subharmonics with increased feedback gain, distorting optical reverberators. Odd-petaled structures are uniquely perturbed by rotating waves, revealing new spatiotemporal dynamics.

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Area of Science:

Nonlinear optics
Optical systems
Quantum optics

Background:

Nonlinear interferometers are crucial for studying light-matter interactions.
Optical reverberators are fundamental output patterns in such systems.
Feedback gain significantly influences system dynamics.

Purpose of the Study:

To investigate the impact of feedback gain on spatial subharmonics in a nonlinear interferometer.
To analyze the distortion of optical reverberators.
To characterize the period-doubling process and identify new spatiotemporal effects.

Main Methods:

Utilizing a single-pass nonlinear interferometer with feedback field rotation.
Systematically increasing feedback gain.
Observing and analyzing the resulting optical reverberator patterns and their stability.

Main Results:

Increasing feedback gain excites spatial subharmonics, distorting optical reverberators.
The period-doubling process is dependent on the number of reverberator petals.
A novel spatiotemporal effect was observed where odd-petaled structures are perturbed by a rotating wave, not a static subharmonic.

Conclusions:

Feedback gain in nonlinear interferometers leads to complex dynamics including spatial subharmonics.
The petal number of optical reverberators dictates the nature of period-doubling.
A new rotating wave perturbation phenomenon was discovered, offering insights into nonlinear optical system behavior.