2022
DOI: 10.36227/techrxiv.21763313.v1
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Polarization Modulation in Quantum Dot Spin-VCSELs for Ultrafast Data Transmission

Abstract: <p>Spin-Vertical Cavity Surface Emitting Lasers (spin-VCSELs) are undergoing increasing research effort for new paradigms in high-speed optical communications and photon-enabled computing. To date research in spin-VCSELs has mostly focused on Quantum-Well (QW) devices. However, novel Quantum-Dot (QD) spin-VCSELs, offer enhanced parameter controls permitting the effective, dynamical and ultrafast manipulation of their light emission’s polarization. In the present contribution we investigate in detail the … Show more

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“…10 Spin-VCSELs are a particular class of VCSELs that harness the spin property of the carriers to emit light of tailored polarization. Spin-VCSELs exhibit ultrafast dynamics 11,12 due to the spin coupling between electrons and photons. By exploiting the combination of spin-induced gain asymmetry and birefringence in spin-VCSELs, rapid and controllable oscillations between S + and S − polarizations can be generated, where S + (S − ) the right (left) circularly polarized photon density.…”
Section: Introductionmentioning
confidence: 99%
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“…10 Spin-VCSELs are a particular class of VCSELs that harness the spin property of the carriers to emit light of tailored polarization. Spin-VCSELs exhibit ultrafast dynamics 11,12 due to the spin coupling between electrons and photons. By exploiting the combination of spin-induced gain asymmetry and birefringence in spin-VCSELs, rapid and controllable oscillations between S + and S − polarizations can be generated, where S + (S − ) the right (left) circularly polarized photon density.…”
Section: Introductionmentioning
confidence: 99%
“…The frequency of these polarization oscillations is determined by the linear birefringence within the VCSEL cavity, and it can surpass the frequency of relaxation oscillations observed in conventional VCSELs, thus outperforming those in high-speed optical communications. [11][12][13][14] Another distinctive feature inherent to spin-VCSELs involves modulating either pump strength 15 or ellipticity. 11,12 Motivated by the exceptional performance characteristics, we explore the potential of QD spin-VCSELS for photonic spike processing, which has not been explored before.…”
Section: Introductionmentioning
confidence: 99%
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