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Transverse-mode-selectable microlens vertical-cavity surface-emitting laser.

Il-Sug Chung1, Pierluigi Debernardi, Yong Tak Lee

  • 1DTU Fotonik, Department of Photonics Engineering, Build 343, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark. ilch@fotonik.dtu.dk

Optics Express
|April 15, 2010
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Summary
This summary is machine-generated.

A novel vertical-cavity surface-emitting laser with a microlens offers tunable, high-power single-mode output. This laser technology is ideal for optical interconnects and particle trapping applications.

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Area of Science:

  • Optics and Photonics
  • Semiconductor Lasers

Background:

  • Vertical-cavity surface-emitting lasers (VCSELs) are crucial for optical communication.
  • Achieving high-power, single-mode operation with controllable beam profiles remains a challenge.

Purpose of the Study:

  • To propose and investigate a new VCSEL structure with a microlens for mode control.
  • To enable tunable emission of high-power Gaussian or doughnut-shaped modes.

Main Methods:

  • Numerical investigation of a novel VCSEL structure.
  • Analysis of mode selection properties through rigorous physical origin analysis.
  • Comparison with existing VCSEL structures.

Main Results:

  • Demonstration of a VCSEL structure capable of emitting in either a single-fundamental Gaussian mode or a higher-order doughnut mode.
  • High-power output achieved in both operational modes.
  • Successful engineering of emission shape while maintaining strong single-mode operation.

Conclusions:

  • The proposed microlens-integrated VCSEL offers a versatile platform for mode engineering.
  • This technology holds promise for advanced optical interconnects and precise particle manipulation.