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Updated: May 31, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Published on: February 28, 2016

Linear dispersive effect on random lasing modes.

Yong Liu¹, Jinsong Liu, Kejia Wang

¹Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan, China. jsliu4508@vip.sina.com

|July 13, 2011

Summary

This summary is machine-generated.

Linear dispersion in random lasing affects mode properties. Dispersive scattering lowers spectral intensity and increases the number of modes, but raises the lasing threshold compared to non-dispersive cases.

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Area of Science:

Physics
Optics
Photonics

Background:

Random lasing is a complex optical phenomenon.
Understanding the influence of dispersion is crucial for controlling random laser properties.

Purpose of the Study:

To investigate the linear dispersive effect on random lasing modes.
To analyze how dispersion impacts resonant frequency, spectral intensity, and mode distribution.

Main Methods:

A theoretical model combining Maxwell's equations, Sellmeier's fitting equations, and four-level rate equations was developed.
Computed results were analyzed for both dispersive and non-dispersive scattering scenarios.

Main Results:

The first excited modes showed similar resonant frequencies in both cases.
Dispersive scattering resulted in lower spectral intensity and a greater number of modes.
The threshold for random lasing was found to be higher in the dispersive case.

Conclusions:

Linear dispersion significantly alters the spectral characteristics of random lasing.
Dispersion leads to a broader spectrum with reduced peak intensity and a higher lasing threshold.