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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems

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Published on: April 28, 2016

Extreme value statistics in Raman fiber lasers.

Dmitry V Churkin¹, Oleg A Gorbunov, Sergey V Smirnov

¹Institute of Automation and Electrometry, SB RAS, Novosibirsk, Russia. churkin@iae.nsk.su

|September 21, 2011

Summary

This study numerically investigates a Raman fiber laser, finding that extreme events occur in its spectrum due to complex mode interactions. These rare events are linked to turbulent-like four-wave mixing in the laser cavity.

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Area of Science:

Nonlinear Optics
Laser Physics
Statistical Optics

Background:

Partially coherent lasers are crucial for various applications.
High-Q cavities enhance laser performance but can lead to complex dynamics.
Raman fiber lasers offer unique spectral properties.

Purpose of the Study:

To numerically investigate the statistical properties of a partially coherent, quasi-Continuous Wave (CW), high-Q cavity Raman fiber laser.
To understand the generation mechanisms of spectral features, particularly extreme events.

Main Methods:

Numerical simulation of laser dynamics.
Analysis of statistical properties of laser output.
Spectral analysis to identify extreme events and their origins.

Main Results:

Statistical properties of laser radiation differ based on the number of cavity passes.
Rare extreme events are observed at the far spectral wings.
Turbulent-like four-wave mixing of numerous longitudinal modes is identified as the generation mechanism for extreme events.

Conclusions:

The study elucidates the statistical behavior of a specific type of Raman fiber laser.
Understanding extreme event generation is key for controlling laser output.
The findings contribute to the fundamental knowledge of nonlinear fiber laser dynamics.