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1550 nm high contrast grating VCSEL.

Christopher Chase1, Yi Rao, Werner Hofmann

  • 1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA 94720, USA.

Optics Express
|August 20, 2010
PubMed
Summary

We developed a new 1550 nm vertical-cavity surface-emitting laser (VCSEL) using a high contrast grating (HCG) and proton implantation. This novel design achieves over 1 mW output power at room temperature and operates above 60°C.

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Area of Science:

  • Optoelectronics
  • Semiconductor devices
  • Photonics

Background:

  • Vertical-cavity surface-emitting lasers (VCSELs) are crucial for optical communication.
  • Long-wavelength (1550 nm) VCSELs are essential for fiber optic networks.
  • Current fabrication methods can be complex and costly.

Purpose of the Study:

  • To demonstrate a novel, cost-effective 1550 nm VCSEL design.
  • To achieve high output power and stable operation at room temperature.
  • To explore the potential for lower-cost long-wavelength VCSEL manufacturing.

Main Methods:

  • Fabrication of a 1550 nm VCSEL incorporating a high contrast grating (HCG).
  • Utilizing a proton implant-defined aperture for device definition.
  • Single epitaxy step growth process.

Main Results:

  • Achieved output powers exceeding 1 mW at room temperature under continuous wave (CW) operation.
  • Demonstrated stable CW operation at temperatures above 60°C.
  • The HCG VCSEL design shows promising performance characteristics.

Conclusions:

  • The developed HCG VCSEL with a proton implant-defined aperture is a viable technology for 1550 nm operation.
  • The single epitaxy step growth offers a pathway to lower-cost manufacturing.
  • This technology has the potential to advance long-wavelength VCSEL applications.