Breakthroughs in Photonics 2014: Phase Change Materials for Photonics

Zheng, Youdou; Ramanathan, Shriram

doi:10.1109/jphot.2015.2413594

Cited by 36 publications

(25 citation statements)

References 24 publications

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“…[8][9][10][11] There have already been several review articles describing recent advancements in the field. [48][49][50][51][52][53][54] Below, we will specifically focus on a spaser based on a single nanoparticle, and methods to control its spasing properties.…”

Section: Spasermentioning

confidence: 99%

Nanolasers Enabled by Metallic Nanoparticles: From Spasers to Random Lasers

Wang

Meng

Kildishev

et al. 2017

Laser & Photonics Reviews

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Owing to exotic optical responses, metallic nanoparticles and nanostructures are finding broad applications in laser science, leading to numerous design variations of plasmonic nanolasers. Nowadays, two of the most intriguing plasmonic nanolasing devices are spasers and random lasers. While a spaser is based on a single metallic nanoparticle resonator with the optical feedback provided by the localized surface plasmon resonance, the operation of a random laser relies on multiple light scattering within randomly distributed metallic nanoparticles. In this paper, an up-to-date review on the applications of metallic nanoparticles in spasers and random lasers is provided. Principles of a random spaser, a device combining the features of a spaser and a random laser, are briefly discussed as well. The paper is focused on major theoretical and experimental approaches to control the core metrics of lasing performance, including threshold, resonant wavelength, and emission directionality. The applications of spasers and random lasers in the fields of sensing and imaging are also mentioned. Finally, the challenges and future perspectives in this area of research are discussed.

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Section: Spasermentioning

confidence: 99%

Nanolasers Enabled by Metallic Nanoparticles: From Spasers to Random Lasers

Wang

Meng

Kildishev

et al. 2017

Laser & Photonics Reviews

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“…In this regard, phase-change materials (PCMs) offer an appealing approach to introducing true reconfigurability as they undergo significant changes in optical properties upon exposure to external stimuli 6 , 7 . Examples of PCMs are vanadium dioxide (VO 2 ) 8 – 11 and germanium antimony telluride (GeSbTe) glasses 6 , 12 , which undergo dielectric to metallic phase transitions upon heating or pulsed-laser excitation.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable infrared hyperbolic metasurfaces using phase change materials

et al. 2018

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Metasurfaces control light propagation at the nanoscale for applications in both free-space and surface-confined geometries. However, dynamically changing the properties of metasurfaces can be a major challenge. Here we demonstrate a reconfigurable hyperbolic metasurface comprised of a heterostructure of isotopically enriched hexagonal boron nitride (hBN) in direct contact with the phase-change material (PCM) single-crystal vanadium dioxide (VO2). Metallic and dielectric domains in VO2 provide spatially localized changes in the local dielectric environment, enabling launching, reflection, and transmission of hyperbolic phonon polaritons (HPhPs) at the PCM domain boundaries, and tuning the wavelength of HPhPs propagating in hBN over these domains by a factor of 1.6. We show that this system supports in-plane HPhP refraction, thus providing a prototype for a class of planar refractive optics. This approach offers reconfigurable control of in-plane HPhP propagation and exemplifies a generalizable framework based on combining hyperbolic media and PCMs to design optical functionality.

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“…Materials that undergo electronic and/or structural phase change associated with a reversible switching of their optical properties have received recently increasing attention for the development of active photonic devices. [1][2] These phase-change materials (PCMs) exhibit changes of their refractive index in response to external stimuli (e.g. heat, voltage bias or light irradiation), which have been exploited for a variety of applications, such as smart windows, optical memories, spatial light modulators and photonic integrated circuits.…”

mentioning

confidence: 99%