Near-threshold high spin amplification in a 1300 nm GaInNAs spin laser

Ben Cemlyn, Mike Adams, Edmund Harbord, Nianqiang Li, Ian Henning, Ruth Oulton, Ville Markus Korpijärvi, Mircea Guina

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Abstract

Using continuous-wave optical pumping of a spin-VCSEL at room temperature, we find high spin amplification of the pump close to threshold within the communications wavelength window, here at 1300 nm. This facilitates a strong switch from left to right circularly polarised light emission, which has potential applications in polarisation encoding for data communications. We use a simple spin flip model to fit the experimental results and discuss the VCSEL parameters that affect this amplification.

Original languageEnglish
Article number094005
Number of pages9
JournalSemiconductor Science and Technology
Volume33
Issue number9
DOIs
Publication statusPublished - 1 Aug 2018

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Keywords

  • spin amplification
  • spin laser
  • spin VCSEL

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