Cited by 12Photonic and Optical DevicesOptical Coatings and GratingsPhotonic Crystals and Applications

High Reflectance Dielectric Distributed Bragg Reflectors for near Ultra-Violet Planar Microcavities: SiO2/HfO2 versus SiO2/SiNx

Réveret, F., Bignet, L., Zhigang, W., Lafosse, X., Patriarche, G., Disseix, P., Médard, F., Mihailovic, M. +3 more·2016·Journal of Applied Physics

Abstract

SiO2/SiNx and SiO2/HfO2 distributed Bragg reflectors for the ultra-violet (λ = 360 nm–380 nm) are compared through their structural and optical properties. The SiO2/HfO2 system exhibits a lower interface roughness, higher reflectance, larger stop band, and lower penetration depth than SiO2/SiNx. A cavity quality factor of 3700 at about 360 nm is measured on a passive SiO2/HfO2-based planar microcavity. Compared with values obtained in the literature for the near UV range, the latter is rather large. Micro-reflectance measurements have been performed on a series of passive microcavities with increasing cavity thickness to determine the residual absorption in the SiO2 and HfO2 layers. Absorption coefficients of 30 (k = 0.86 × 10−4) and 160 cm−1 (k = 4.59 × 10−4) near λ ∼ 360 nm have been extracted for SiO2 and HfO2, respectively. Transfer-matrix simulations taking into account the residual absorption show that microcavity quality factors up to 8000 can be expected at 360–380 nm with this material system. Such values are well-suited for the fabrication of UV-vertical cavity surface emitting lasers or microcavity polariton lasers operating at room temperature.

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Crossref · 10.1063/1.4961658

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  • Réveret et al. employed a SiO2/HfO2-based Bragg stack in a planar microcavity using ion beam-assisted electron-gun vacuum evaporation; they obtained reflective coatings with a small number of pairs over a 60×60 mm2 surface with uniformity smaller than 4%, high reflectivity, broader PBG, and lower penetration depth.

    “Réveret et al. [246] employed a SiO2/HfO2based Bragg stack in a planar microcavity using ion beam-assisted electron-gun vacuum evaporation. They obtained reflective coatings with a small number of pairs over a 60 × 60 mm 2 surface with a uniformity smaller than 4%, a high reflectivity, a broader PBG, and a lower penetration depth (LDBR), which are beneficial for achieving an efficient planar micro”

    From Metal Oxide Thin Films for Advanced Photonic Applications (2026) · cites this paper as [246]

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Authors
Réveret, F., Bignet, L., Zhigang, W., Lafosse, X., Patriarche, G., Disseix, P., Médard, F., Mihailovic, M., Leymarie, J., Zúñiga-Pérez, J., & Bouchoule, S.
Affiliations
Centre National de la Recherche Scientifique (FR)
Venue
Journal of Applied Physics
Published
2016-09-02
Volume
120
Issue
9
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W2517439863
Cited by
12
References
54
Citations by year
2026: 2 · 2025: 4 · 2023: 3 · 2021: 1 · 2020: 1 · 2018: 1
FWCI
0.15
Type
journal article
Language
en
Open access
closed
Locations
Journal of Applied Physics (publishedVersion)
Funders
  • Agence Nationale de la Recherche (ANR-11-LABX-0014, ANR-11-BS03-0012)
  • LabEx GANEX
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Optical Coatings and Gratings
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photonic Crystals and Applications
Keywords
distributed Bragg reflector, planar microcavities, near-ultraviolet, high reflectivity, cavity quality factor, interface roughness, penetration depth, residual absorption, stop band

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