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Implementation of a Coherent Anti-Stokes Raman Scattering CARS System on a Ti:Sapphire and OPO Laser Based Standard Laser Scanning Microscope

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A one-dimensional random laser based on artificial high-index contrast scatterers.

Yanyan Wu¹, Yuhao Ren, Anqi Chen

¹State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China. zhuhai5@mail.sysu.edu.cn.

|May 5, 2017

Summary

Researchers created a one-dimensional random laser (RL) using artificial scatterers and demonstrated mode manipulation via laser-ablated micro-pits. This work advances disordered systems for optoelectronic applications.

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Area of Science:

Photonics and Optoelectronics
Disordered Systems
Laser Physics

Background:

Random lasers (RLs) offer unique properties due to disorder.
Controlling lasing modes in low-dimensional RLs remains a challenge.

Purpose of the Study:

To realize and investigate a one-dimensional (1D) random laser (RL).
To demonstrate manipulation of lasing modes in a 1D microwire (MW) RL.
To explore the potential of disordered systems in optoelectronic devices.

Main Methods:

Fabrication of artificial scatterers for 1D RL.
Laser-ablation technique to create micro-pits for mode manipulation.
Comprehensive investigation of lasing characteristics, including near- and far-field imaging.

Main Results:

Successful realization of a 1D microwire (MW) RL.
Demonstrated manipulation of lasing modes using micro-pits.
Achieved well-defined sharp lasing peaks via coherent feedback in the 1D waveguide.
Observed excellent spatial intensity distribution and stable lasing modes.

Conclusions:

A novel method for developing manipulated RLs was presented.
The study highlights the application of disordered systems in optoelectronics.
The findings pave the way for advanced disordered optoelectronic devices.