Two-dimensional field analysis of semiconductor lasers with small vertical beam divergence

Kuo-Jui Lin, Chien Ping Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Two-dimensional (2D) optical field distribution and the far-field patterns are analyzed for semiconductor lasers with small vertical beam divergence. The discrete spectral index method is used for the analysis and compared with other methods such as the effective index method. The discrete spectral index method is found to be much better in terms of accuracy and computation efficiency for the laser structures studied. Two laser structures with experimental counterparts are studied. The best beam aspect ratio (<1.5) is achieved using the conventional ridge waveguide process. The calculated results compare very favorably with the experimental results. Simulations also reveal the guidelines for design of symmetric optical beam.

Original languageEnglish
Pages (from-to)661-675
Number of pages15
JournalOptical and Quantum Electronics
Volume34
Issue number7
DOIs
StatePublished - Jul 2002

Keywords

  • Beam aspect ratio
  • Beam divergence
  • Discrete spectral index method
  • Ridge waveguide laser
  • Two-dimensional analysis

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