Simulated dynamics of optically pumped dilute nitride 1300 nm spin vertical-cavity surface-emitting lasers

• Published in: IET optoelectronics 2014-04, Vol.8 (2), p.117-121
• Main Authors: Alharthi, Sami S, Al Seyab, Rihab K, Henning, Ian D, Adams, Michael J
• Format: Article
• Language: English
• Subjects: Birefringence; birefringence rate; continuous‐wave pumping; Devices; Dilution; Dynamics; high‐frequency applications; instability regions; laser cavity resonators; laser stability; light polarisation; linewidth enhancement factor; Nitrides; nitrogen; optical pumping; optically pumped dilute nitride spin‐polarised VCSEL; output polarisation ellipticity; Pumps; rich dynamics; self‐sustained oscillations; Special Issue on Semiconductor Lasers and Integrated Optoelectronics; spin‐flip model; Stability; surface emitting lasers; two‐dimensional contour maps; Vertical cavity surface emission lasers; vertical‐cavity surface‐emitting lasers; wavelength 1300 nm
• ISSN: 1751-8768; 1751-8776; 1751-8776
• DOI: 10.1049/iet-opt.2013.0044

The authors report a theoretical analysis of optically pumped 1300 nm dilute nitride spin-polarised vertical-cavity surface-emitting lasers (VCSELs) using the spin-flip model to determine the regions of stability and instability. The dependence of the output polarisation ellipticity on that of the pump is investigated, and the results are presented in two-dimensional contour maps of the pump polarisation against the magnitude of the optical pump. Rich dynamics and various forms of oscillatory behaviour causing self-sustained oscillations in the polarisation of the spin-VCSEL subject to continuous-wave pumping have been found because of the competition of the spin-flip processes and birefringence. The authors also reveal the importance of considering both the birefringence rate and the linewidth enhancement factor when engineering a device for high-frequency applications. A very good agreement is found with the experimental results reported by the authors’ group.