Search papers, labs, and topics across Lattice.
This paper investigates polarization dynamics in optically injected vertical-cavity surface-emitting lasers (VCSELs) to improve polarization locking for potential use in polarization-encoded Ising computers. They fabricated VCSELs with tailored oxide aperture designs and used bias current tuning to optimize polarization locking, achieving a reduction in required injection power down to 3.6 渭W and an expanded locking range. The spin-flip model was used to analyze the effects of amplitude anisotropy and bias current, showing strong agreement with experimental results.
Tailoring VCSEL oxide apertures and bias currents unlocks significantly enhanced polarization locking, paving the way for practical polarization-encoded Ising computers.
While optical injection locking (OIL) of vertical-cavity surface-emitting lasers (VCSELs) has been widely studied in the past, the polarization dynamics of OIL have received far less attention. Recent studies suggest that polarization locking via OIL could enable novel computational applications such as polarization-encoded Ising computers. However, the inherent polarization preference and limited polarization switchability of VCSELs hinder their use for such purposes. To address these challenges, we fabricate VCSELs with tailored oxide aperture designs and combine these with bias current tuning to study the overall impact on polarization locking. Experimental results demonstrate that this approach reduces the required injection power (to as low as 3.6鈥壩糤) and expands the locking range. To investigate the impact of the approach, the spin-flip model is used to analyze the effects of amplitude anisotropy and bias current on polarization locking, demonstrating strong coherence with experimental results.
NUS