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Related Experiment Video

Updated: Dec 24, 2025

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Optimisation of photonic crystal coupling through waveguide design.

R J E Taylor^1,2, P Ivanov^1,3, G Li^1,3

¹1Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield, S3 7HQ UK.

Optical and Quantum Electronics

|April 10, 2020

Summary

This study explores photonic crystal surface emitting laser (PCSEL) designs, finding that modifications enhance light coupling but pose fabrication challenges. All-semiconductor PCSELs are feasible across various materials and wavelengths.

Keywords:

Laser Photonic crystal Waveguide

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Last Updated: Dec 24, 2025

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Area of Science:

Optics and Photonics
Semiconductor Lasers
Materials Science

Background:

Photonic crystal surface emitting lasers (PCSELs) are crucial for various applications.
Optimizing PCSEL structures is key to improving performance and manufacturability.
Existing designs require further investigation for broader applicability.

Purpose of the Study:

To investigate novel structural designs for PCSELs.
To analyze the impact of structural modifications on light coupling efficiency.
To assess the feasibility of all-semiconductor PCSELs at key wavelengths.

Main Methods:

Modeling of modified PCSEL structures, including ballast and double-decker layers.
Utilizing coupling calculations and waveguide modeling.
Simulating standard laser structures with varying photonic crystal thicknesses.

Main Results:

Modified structures (ballast and double-decker layers) show increased coupling but present fabrication difficulties.
Increasing photonic crystal thickness enhances coupling, though not universally across all thicknesses.
All-semiconductor PCSELs are viable for a wide range of materials and wavelengths.

Conclusions:

Structural modifications can improve PCSEL coupling efficiency.
Photonic crystal thickness is a critical parameter influencing performance.
The development of versatile all-semiconductor PCSELs is achievable.