ArticleNanophotonics (Berlin, Germany)2022
High-Q asymmetrically cladded silicon nitride 1D photonic crystals cavities and hybrid external cavity lasers for sensing in air and liquids.
Article in Nanophotonics (Berlin, Germany), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Ultrasensitive topological interface modes for refractive index sensing via all-dielectric one-dimensional photonic crystals.Scientific reports · 2026Article
- Engineered fano resonances in a compact SiScientific reports · 2026Article
- Flow Injection-Based Refractive Index Sensing with a SiACS applied optical materials · 2025Article
- Micro-Ring Resonator Assisted Photothermal Spectroscopy of Water Vapor.Sensors (Basel, Switzerland) · 2024Article
- Photothermal spectroscopy on-chip sensor for the measurement of a PMMA film using a silicon nitride micro-ring resonator and an external cavity quantum cascade laser.Nanophotonics (Berlin, Germany) · 2024Article
- Mid-Infrared Photothermal Spectroscopy for the Detection of Caffeine in Beverages.Sensors (Basel, Switzerland) · 2024Article
- Highly efficient and selective integrated directional couplers for multigas sensing applications.Scientific reports · 2023Article
- Erratum to: High-Q asymmetrically cladded silicon nitride 1D photonic crystals cavities and hybrid external cavity lasers for sensing in air and liquids.Nanophotonics (Berlin, Germany) · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this paper we show a novel design of high Q-factor silicon nitride (SiN) 1D photonic crystal (PhC) cavities side-coupled to curved waveguides, operating with both silica and air cladding. The engineering of the etched 1D PhC cavity sidewalls angle allows for high Q-factors over a wide range of upper cladding compositions, and the achievement of the highest calculated Q-factor for non-suspended asymmetric SiN PhC structures. We show the employment of these type of SiN PhC cavities in hybrid external cavity laser (HECL) configuration, with mode-hop free single mode laser operation over a broad range of injected currents (from 25 mA to 65 mA), milliwatts of power output (up to 9 mW) and side-mode suppression ratios in the range of 40 dB. We demonstrate the operation of these devices as compact and energy efficient optical sensors that respond to refractive index changes in the surrounding medium the measurement of sodium chloride (from 0% to 25%) and sucrose (from 0% to 25%) in aqueous solution. In HECL configuration, the RI sensor exhibits a 2 orders of magnitude improvement in detection limit compared to the passive microcavity. We also discuss the possibility for applying these devices as novel transducers for refractive index changes that are induced by analyte specific absorption of infrared radiation by the target analytes present in gas or liquid phase.
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