Numerical investigation on self-heating effect in 1.3 µm quantum dot photonic crystal microstructure VCSELs

Alaei, Sara; Seifouri, Mahmood; Babaabbasi, Gholamreza; Olyaee, Saeed

doi:10.1140/epjp/s13360-022-02731-6

Cited by 2 publications

(1 citation statement)

References 54 publications

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“…The polarization characteristic of the HCG-VCSEL can be improved by specifically aligning the HCG with a symmetric oxide aperture; this is our future work. The performance of the HCG-VCSEL will be improved by reducing the self-heating effect [57][58][59][60].…”

Section: Discussionmentioning

confidence: 99%

Surface-Emitting Lasers with Surface Metastructures

et al. 2023

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Vertical-cavity surface-emitting lasers (VCSELs) have been widely used in consumer electronics, light detection and ranging, optical interconnects, atomic sensors, and so on. In this paper, a VCSEL with the surface metastructure like one-dimensional high-contrast grating (HCG), based on the HCG-DBR vertical cavity, was first designed and fabricated. The polarization characteristic of the HCG-VCSEL were experimentally studied. The p-doped top 4-pair DBR for the current spreading and the direction shift between the HCG and the elliptical oxide aperture may result in a low orthogonal polarization suppression ratio in the HCG-VCSEL. Then, the Bloch surface wave surface-emitting laser (BSW-SEL), based on the HCG-DBR metastructure, is proposed for single-mode, high-efficiency, and high-power output with a low divergence angle. The mode field and the far field profile of the BSW-SEL are calculated for verification. The surface-emitting lasers with surface metastructures are useful for the sensing applications and optical interconnects.

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Section: Discussionmentioning

confidence: 99%

Surface-Emitting Lasers with Surface Metastructures

et al. 2023

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Investigation of InGaN-Based Green Micro-Photonic-Crystal- Light-Emitting-Diodes with Bottom, Nanoporous, Distributed Bragg Reflectors

et al. 2022

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In this work, an InGaN-based, green micro-photonic crystal-light-emitting-diode (µ-PCLED), which incorporates a nanoporous, GaN-distributed Bragg reflector (DBR) to form a Fabry–Perot (FP) cavity, was fabricated and characterized. Simulations for the µ-PCLED’s optical features were systematically performed and analyzed. Numerical results revealed that the p-GaN photonic crystal (PC) with a filling factor of 0.3 is beneficial for improving the coupling constants of the first- and second-order Bragg diffractions. In addition, based on the product of quantum well (QW) and PC confinement factors, four to six pairs of InGaN QWs should be the preferable design. In order to achieve single-wavelength emission and small full-width at half-maximum (FWHM), the thickness of the n-GaN layer was controlled to be thinner than 920 nm, leading to more than 20 nm wavelength separation between two adjacent FP modes. Experimentally, the fabricated InGaN-based µ-PCLED with a mesa diameter of 30 µm can emit 545 nm green light with FWHM of about 10 nm and negligible blue-shift of about 3 nm in spontaneous emission under the injection current of 1 to 10 mA. Our simulation and experimental results demonstrate that the p-GaN PC design can effectively resolve the wavelength instability issue.

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Numerical investigation on self-heating effect in 1.3 µm quantum dot photonic crystal microstructure VCSELs

Cited by 2 publications

References 54 publications

Surface-Emitting Lasers with Surface Metastructures

Surface-Emitting Lasers with Surface Metastructures

Investigation of InGaN-Based Green Micro-Photonic-Crystal- Light-Emitting-Diodes with Bottom, Nanoporous, Distributed Bragg Reflectors

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