Optical properties of carbon nanofiber photonic crystals

Rehammar, Robert; Magnusson, Roger; Fernández‐Domínguez, Antonio I.; Arwin, Hans; Kinaret, Jari M.; Maier, Stefan A.; Campbell, Eleanor E. B.

doi:10.1088/0957-4484/21/46/465203

Cited by 7 publications

(10 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CNF arrays grown on Si have been shown earlier to work as diffraction gratings when irradiated with white light [9,10], and light transmission through nanowirebased PCs has been studied theoretically [11]. We have recently shown that variable-angle spectroscopic ellipsometry can be used to determine the band structure of CNF PCs on a metallic substrate [12]. In this Letter, the fundamental diffraction properties of CNF-based PCs are studied in detail.…”

mentioning

confidence: 92%

See 1 more Smart Citation

Diffraction from carbon nanofiber arrays

Rehammar¹,

Francescato²,

Fernández‐Domínguez³

et al. 2011

Opt. Lett.

View full text Add to dashboard Cite

A square planar photonic crystal composed of carbon nanofibers was fabricated using e-beam lithography and chemical vapor deposition. The diffraction properties of the system were characterized experimentally and compared with theory and numerical simulations. The intensities of the (-1,0) and (-1,-1) diffraction beams were measured as functions of the angles of incidence for both s and p-polarization. The obtained radiation patterns can be explained using a simple ray interference model, but finite-difference time-domain (FDTD) calculations are necessary to reproduce the observed dependence of the scattered radiation intensity on incident laser polarization. We explain this in terms of the aspect ratio of the nanofibers and the excitation of surface plasmon polaritons at the substrate interface.

show abstract

mentioning

confidence: 92%

“…CNFs are grown to a height of approximately 1.4 μm with a diameter of 65 nm. A more detailed description of the fabrication process can be found elsewhere [13,12]. When light interacts with an ordered array of scatterers, an integer multiple of a reciprocal lattice vector can be transferred by the lattice to the incident wave [14].…”

mentioning

confidence: 99%

Diffraction from carbon nanofiber arrays

Rehammar¹,

Francescato²,

Fernández‐Domínguez³

et al. 2011

Opt. Lett.

View full text Add to dashboard Cite

show abstract

“…Photonic crystal structures have drawn a lot of attention over the last two decades but the routine design of full bandgap materials in three dimensions for optical wavelengths has proven elusive [1][2][3][4][5][6][7]. Recently, disordered and isotropic photonic materials have been suggested as an alternative [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Photonic hyperuniform networks obtained by silicon double inversion of polymer templates

Müller¹,

Haberko²,

Marichy³

et al. 2017

Optica

View full text Add to dashboard Cite

Hyperuniform disordered networks belong to a peculiar class of structured materials predicted to possess partial and complete photonic bandgaps for relatively moderate refractive index contrasts.The practical realization of such photonic designer materials is challenging however, as it requires control over a multi-step fabcrication process on optical length scales. Here we report the directlaser writing of hyperuniform polymeric templates followed by a silicon double inversion procedure leading to high quality network structures made of polycrystalline silicon. We observe a pronounced gap in the shortwave infrared centered at a wavelength of λ Gap 2.5 µm, in nearly quantitative agreement with numerical simulations. In the experiments the typical structural length scale of the seed pattern can be varied between 2 µm and 1.54 µm leading to a blue-shift of the gap accompanied by an increase of the silicon volume filling fraction.

show abstract

“…[11][12][13][14][15] In recent work we have shown that ellipsometry is a powerful technique to determine the band structure of such 2D VACNF PC and can be used to identify symmetry directions and lattice parameters. 15 We have also shown that the main features of the diffraction properties of the VACNF PC can be modelled using standard diffraction theory but observed polarization-dependent diffraction intensities required a consideration of the form factor of the VACNF array and the role of surface plasmons at the PC-substrate interface to be explained. 13 In this letter we combine these two techniques to characterise tunable VACNF PC.…”

mentioning

confidence: 99%

“…3a. 15 Ellipsometry measures the complex reflectance ratio =/a. This corresponds to the BZ edge of the VACNF square lattice.…”

mentioning

confidence: 99%

Electromechanically Tunable Carbon Nanofiber Photonic Crystal

et al. 2013

View full text Add to dashboard Cite

We demonstrate an electrically tunable 2D photonic crystal array constructed from vertically aligned carbon nanofibers. The nanofibers are actuated by applying a voltage between adjacent carbon nanofiber pairs grown directly on metal electrodes, thus dynamically changing the form factor of the photonic crystal lattice. The change in optical properties is characterized using optical diffraction and ellipsometry. The experimental results are shown to be in agreement with theoretical predictions and provide a proof-of-principle for rapidly switchable photonic crystals operating in the visible that can be fabricated using standard nanolithography techniques combined with plasma CVD growth of the nanofibers.

show abstract

Optical properties of carbon nanofiber photonic crystals

Cited by 7 publications

References 18 publications

Diffraction from carbon nanofiber arrays

Diffraction from carbon nanofiber arrays

Photonic hyperuniform networks obtained by silicon double inversion of polymer templates

Electromechanically Tunable Carbon Nanofiber Photonic Crystal

Contact Info

Product

Resources

About