Mechanically tunable photonic crystal structure

Park, Won; Lee, Jeong

doi:10.1063/1.1823019

Cited by 155 publications

(90 citation statements)

References 13 publications

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“…As a consequence, the lasing performance in such structures is expected to be greater, as conjectured by us earlier [14]. Note that the nanopillar-based structures in the wavelength range considered (1 ÷ 1.5 µm) are within the state-of-the-art fabrication possibilities, both in sandwich-like [6] and in membrane-like [18] geometry.…”

Section: Discussionmentioning

confidence: 80%

“…This is an alternative to the known concept of tunable lasers where the resonator itself is modified, e.g. by thermal, electrooptical (using liquid crystals) or micromechanical means [16][17][18][19] to tune a given mode to have the desired frequency. One of the advantages may be that modes selected by injection seeding can be better pre-engineered to meet the desired fundamental (e.g., cavity QED) or application purposes [10].…”

Section: Introductionmentioning

confidence: 99%

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Selective lasing in multimode periodic and non‐periodic nanopillar waveguides

Zhukovsky¹,

Chigrin²,

Lavrinenko³

et al. 2007

Physica Status Solidi (b)

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We investigate the lasing action in coupled multi-row nanopillar waveguides of periodic or fractal structure using the finite difference time domain (FDTD) method, coupled to the laser rate equations. Such devices exhibit band splitting with distinct and controllable supermode formation. We demonstrate that selective lasing into each of the supermodes is possible. The structure acts as a microlaser with selectable wavelength. Lasing mode selection is achieved by means of coaxial injection seeding with a Gaussian signal of appropriate transverse amplitude and phase profiles. Based on this we propose the concept of switchable lasing as an alternative to conventional laser tuning by means of external cavity control.

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Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Selective lasing in multimode periodic and non‐periodic nanopillar waveguides

Zhukovsky¹,

Chigrin²,

Lavrinenko³

et al. 2007

Physica Status Solidi (b)

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“…1, 29 The largest stopband shift of 2.8 lm was exhibited by samples that were effectively strained by $40%. This stopband shift is more substantial than the 1.25 lm shift achieved by solvent swelling of lamellar photonic crystal gels outlined by Kang et al, 15 and outperforms other elastomeric 3D photonic crystals like the one reported by Fudouzi and Sawada where a 20% strain leads to a 30 nm stopband shift.…”

mentioning

confidence: 99%

Polymer lattices as mechanically tunable 3-dimensional photonic crystals operating in the infrared

Chernow

Alaeian

Dionne

et al. 2015

Applied Physics Letters

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Broadly tunable photonic crystals in the near- to mid-infrared region could find use in spectroscopy, non-invasive medical diagnosis, chemical and biological sensing, and military applications, but so far have not been widely realized. We report the fabrication and characterization of three-dimensional tunable photonic crystals composed of polymer nanolattices with an octahedron unit-cell geometry. These photonic crystals exhibit a strong peak in reflection in the mid-infrared that shifts substantially and reversibly with application of compressive uniaxial strain. A strain of ∼40% results in a 2.2 μm wavelength shift in the pseudo-stop band, from 7.3 μm for the as-fabricated nanolattice to 5.1 μm when strained. We found a linear relationship between the overall compressive strain in the photonic crystal and the resulting stopband shift, with a ∼50 nm blueshift in the reflection peak position per percent increase in strain. These results suggest that architected nanolattices can serve as efficient three-dimensional mechanically tunable photonic crystals, providing a foundation for new opto-mechanical components and devices across infrared and possibly visible frequencies.

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“…The PC band gap is also very sensitive to mechanical deformations [12][13][14][15]. Sensitivity can be further increased by adding a micro-cavity, by deliberately introducing a local defect in the center of the PC lattice, in the form of a missing post, which creates a narrow band pass in the PC band gap.…”

Section: Introductionmentioning

confidence: 99%

Mechanical tuning of two-dimensional photonic crystal cavity by micro Electro mechanical flexures

Levy

Steinberg

Boag

et al. 2007

Sensors and Actuators A: Physical

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A nano-displacement sensing method for micro-opto-electro-mechanical-systems (MOEMS) is proposed. The method is based on a square lattice photonic crystal (PC) made of dielectric silicon posts, mounted on a micro mechanical flexure. The flexure is fixed at one end and is free to move at the other, to enable elastic deformations that, by being transferred to the photonic crystal array, modify its periodicity and the pertinent transmission characteristics. A missing-post defect is deliberately introduced in the photonic crystal, opening a narrow pass band within the band gap. The pass band wavelength is sensitive to dilatation of the micro mechanical flexure. The flexure Poisson ratio (PR) can be designed according to specific requirements to gain desired sensitivity. Simulations show high sensitivity of 12.3 nm band pass shift for every 1% flexure strain for flexure of a material with a Poisson ratio of −1. An inverted honeycomb based micro-electro-mechanical-systems (MEMS) flexure, with a Poisson ratio of −1, was fabricated in silicon and characterized.

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Mechanically tunable photonic crystal structure

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Cited by 155 publications

References 13 publications

Selective lasing in multimode periodic and non‐periodic nanopillar waveguides

Selective lasing in multimode periodic and non‐periodic nanopillar waveguides

Polymer lattices as mechanically tunable 3-dimensional photonic crystals operating in the infrared

Mechanical tuning of two-dimensional photonic crystal cavity by micro Electro mechanical flexures

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