Subwavelength grating as both emission mirror and electrical contact for VCSELs in any material system

Czyszanowski, Tomasz; Gębski, Marcin; Dems, Maciej; Wasiak, Michał; Sarzała, Robert P.; Panajotov, Krassimir

doi:10.1038/srep40348

Cited by 17 publications

(12 citation statements)

References 38 publications

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“…They can be fabricated in a precisely controllable way, have no mechanical instability, and allow efficient heat dissipation as well as electrical contacts directly on the grating. 11 In this letter, we report a MHCG-cavity polariton laser. High MHCG reflectance and thus high cavity quality factor is achieved using a two-layer MHCG structure, enabling the strong coupling regime and polariton lasing.…”

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confidence: 92%

Monolithic High-Contrast Grating Based Polariton Laser

Kim

Wang

Brodbeck³

et al. 2018

ACS Photonics

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High-reflectance gratings promise new generations of vertical-cavity lasers that allow flexible control of the lasing mode properties and better integration. To date, conventional and polariton vertical-cavity lasers have been created with high-contrast gratings surrounded by air. Suspended in air, these gratings are delicate to fabricate and use, and are difficult for precise property control, electrical injection or thermal management. Here, we demonstrate a high quality vertical-cavity laser with a nonsuspended monolithic grating. High reflectance is achieved to allow the strong coupling regime, verified by angle-resolved photoluminescence measurements. We demonstrate polarized polariton lasing, manifested by a super-linear increase in the polariton emission and linewidth narrowing. We also demonstrate multi-wavelength operation of the polariton laser, with the wavelength controlled by design.

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confidence: 92%

Monolithic High-Contrast Grating Based Polariton Laser

Kim

Wang

Brodbeck³

et al. 2018

ACS Photonics

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“…Such periodic structures surmount diffraction and functions as a uniform medium provided that the periodicity does not follow Bragg’s coupling condition criterion to other confined or radiative modes [ 6 ]. SWGs are commonly used as antireflective coatings [ 7 ], planar mirrors [ 8 ], broadband mirrors [ 9 ], fiber-chip couplers [ 10 , 11 ], modulators [ 12 ] and sensors [ 13 , 14 ], among others. Light excites a Bloch mode in SWG WG, with a core comprised of a periodic arrangement of Si and SiO 2 segments.…”

Section: Introductionmentioning

confidence: 99%

Subwavelength Grating Double Slot Waveguide Racetrack Ring Resonator for Refractive Index Sensing Application

Kazanskiy

Хонина

Butt

2020

Sensors

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In this paper, a racetrack ring resonator design based on a subwavelength grating double slot waveguide is presented. The proposed waveguide scheme is capable of confining the transverse electric field in the slots and the gaps between the grating segments. This configuration facilitates a large light–matter interaction which elevates the sensitivity of the device approximately 2.5 times higher than the one that can be obtained via a standard slot waveguide resonator. The best sensitivity of the design is obtained at 1000 nm/RIU by utilizing a subwavelength grating double slot waveguide of period 300 nm. The numerical study is conducted via 2D and 3D finite element methods. We believe that the proposed sensor design can play an important role in the realization of highly sensitive lab-on-chip sensors.

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“…We also proposed an original approach to current injection based on the use of a semiconductor-metal subwavelength grating (SMSG) as the top mirror of a VCSEL [21]. This solution enables a new approach to designing the top part of a VCSEL.…”

Section: Introductionmentioning

confidence: 99%

Influence of Various Bottom DBR Designs on the Thermal Properties of Blue Semiconductor-Metal Subwavelength-Grating VCSELs

et al. 2019

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In this paper, we consider several designs for nitride-based vertical-cavity surface-emitting lasers (VCSELs) with a top semiconductor-metal subwavelength grating (SMSG) as the facet mirror. The constructions of the bottom distributed Bragg reflectors (DBRs) used in the VCSEL designs were inspired by devices demonstrated recently by several research groups. A multiparameter numerical analysis was performed, based on self-consistent thermal and electrical simulations. The results show that, in the case of small aperture VCSEL designs, dielectric-based DBRs with metallic or GaN channels enable equally efficient heat dissipation to designs with monolithically integrated DBRs. In the case of broad aperture designs enabled by SMSGs, monolithically integrated DBRs provide much more efficient heat dissipation in comparison to all other considered designs.

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Subwavelength grating as both emission mirror and electrical contact for VCSELs in any material system

Cited by 17 publications

References 38 publications

Monolithic High-Contrast Grating Based Polariton Laser

Monolithic High-Contrast Grating Based Polariton Laser

Subwavelength Grating Double Slot Waveguide Racetrack Ring Resonator for Refractive Index Sensing Application

Influence of Various Bottom DBR Designs on the Thermal Properties of Blue Semiconductor-Metal Subwavelength-Grating VCSELs

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