Results 21 to 30 of about 12,922 (291)
Polymer Distributed Bragg Reflectors for Vapor Sensing [PDF]
ACS Photonics, 2015 We establish a new strategy to achieve fast and responsive hybrid distributed Bragg reflectors for environmental vapor sensing. We fabricated easily processable zinc oxide–polystyrene nanocomposites to grow high quality multilayers with large gas permeability and dielectric contrast, which enable fast and sensitive detection of vapor analytes ...
Lova, Paola +8 more
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Corrugated nanowires as distributed Bragg reflectors
Nano Express, 2022 Abstract Distributed Bragg reflectors (DBRs), comprised of periodic refractive index changes, are widely used in optoelectronic devices as resonators, filters and sensors. The heterostructures required for DBRs can be difficult to implement in nanostructures due to poor compositional control on the nanoscale.
D P Wilson, R R LaPierre
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Highly collimated broadside emission from room-temperature GaAs distributed Bragg reflector lasers [PDF]
, 1977 Highly collimated laser beams have been observed to be coupled out by second-order Bragg scattering from GaAs distributed Bragg reflector lasers. The beams are perpendicular to the waveguide plane and have an angular width of less than 1°.
Ng, W., Yariv, A.
core +1 more source
22-GHz Modulation Bandwidth of Long Cavity DBR Laser by Using a Weakly Laterally Coupled Grating Fabricated by Focused Ion Beam Lithography [PDF]
, 2004 A 22-GHz directly modulated 3-dB bandwidth could be obtained by 1.3-mm-long weakly laterally coupled distributed Bragg reflector lasers fabricated by focused ion beam lithography.
Bach, L. +6 more
core +1 more source
Applied Sciences, 2019 A multiple quantum-well semiconductor saturable absorber mirror (MQW-SESAM) structure has been investigated by femtosecond pump-probe laser spectroscopy at a central wavelength of around 1050 nm.
Changxiu Li +4 more
doaj +1 more source
Distributed Bragg reflector lasers emitting between 696 and 712 nm
Electronics Letters, 2022 The authors report on design, fabrication, and electro‐optical characterization of single‐frequency diode lasers emitting around 696, 707, and 712 nm.
Hans Wenzel +9 more
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Virtual cavity in distributed Bragg reflectors
Optics Express, 2018 We show theoretically and experimentally that distributed Bragg reflector (DBR) supports a surface electromagnetic wave exhibiting evanescent decay in the air and oscillatory decay in the DBR. The wave exists in TM polarization only. The field extension in the air may reach several wavelengths of light.
V. A. Shchukin +13 more
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Static and dynamical characteristics of semiconductor vertical-emitting lasers with incorporated photonic crystals [PDF]
, 2008 In this work, AlGaAs-GaAs semiconductor vertical-cavity surface-emitting laser (VCSELs) with incorporation of two-dimensional photonic crystal (PC) waveguides into their top distributed Bragg reflector are experimentally and theoretically investigated ...
Cryan, MJ +3 more
core +2 more sources
Micromachines, 2022 Electromagnetic (EM) absorbers and emitters have attracted much interest because of their versatile applications. A photonic heterostructure composed of silicon carbide (SiC) layer/germanium (Ge) cavity/distributed Bragg reflector (DBR) has been proposed.
Chengxuan Gong, Gaige Zheng
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IEEE Photonics Journal, 2018 We demonstrate a distributed reflector (DR) laser with the distributed feedback (DFB) section and the distributed Bragg reflector (DBR) section sharing the same multiple-quantum-well structure.
Yuanfeng Mao +9 more
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