Analytical and numerical design of a hybrid Fabry–Perot plano-concave microcavity for hexagonal boron nitride

• Felipe Ortiz-Huerta and
• Karina Garay-Palmett

Beilstein J. Nanotechnol. 2022, 13, 1030–1037, doi:10.3762/bjnano.13.90

• -defined spatio-temporal mode along with an accessible numerical aperture (NA) to increase the light extraction efficiency that is required for effective coupling into optical waveguides. Based on a previously developed experimental approach to fabricate hybrid Fabry–Perot microcavities (Ortiz-Huerta et al

• a SPE (i.e., in-plane dipole) hosted by a 2D hBN layer inside the hybrid plano-concave microcavity. Keywords: Fabry–Perot; hBN; microcavities; plano-concave; polymers; Introduction Pure and indistinguishable SPEs are key components needed for their application in upcoming quantum technologies [1

• -plane dipoles), overcomes the necessity for geometrical approaches [6] (i.e., solid immersion lenses [7]) to reduce the angle of emission of the selected SPE. Challenges still lie ahead for hBN as an ideal SPE [4] and, in order to overcome them, photonic structures such as open-access Fabry–Perot

Numerical study on all-optical modulation characteristics of quantum cascade lasers

• Biao Wei,
• Haijun Zhou,
• Guangxiang Li and
• Bin Tang

Beilstein J. Nanotechnol. 2022, 13, 1011–1019, doi:10.3762/bjnano.13.88

• standard 35-stage In0.52Al0.48As/In0.53Ga0.47As type-I four-level Fabry–Perot QCL based on a two-phonon-resonance design [27]. Current injection efficiency is defined as the ratio of current to total current injected into the upper subband of the QCL in the active region, which is close to 56%. The QCL

Kondo effects in small-bandgap carbon nanotube quantum dots

• Patryk Florków,
• Damian Krychowski and
• Stanisław Lipiński

Beilstein J. Nanotechnol. 2020, 11, 1873–1890, doi:10.3762/bjnano.11.169

• ][10][11]. CNTs are also interesting for fundamental science. Their study allows for the examination of many basic properties in ranges often not reachable in other systems. Many of the fundamental transport properties were observed in nanotubes, including Coulomb blockade [12][13], Fabry–Perot

Two-dimensional photonic crystals increasing vertical light emission from Si nanocrystal-rich thin layers

• Lukáš Ondič,
• Marian Varga,
• Ivan Pelant,
• Alexander Kromka,
• Karel Hruška and
• Robert G. Elliman

Beilstein J. Nanotechnol. 2018, 9, 2287–2296, doi:10.3762/bjnano.9.213

• carefully fitting the Fabry–Perot resonances in the transmission spectra. The distribution of refractive index naturally follows the spatial distribution of SiNCs and therefore it can be approximated by an asymmetric Gaussian function. The spatial profile of the refractive index is schematically depicted by

Localized photodeposition of catalysts using nanophotonic resonances in silicon photocathodes

• Evgenia Kontoleta,
• Sven H. C. Askes,
• Lai-Hung Lai and
• Erik C. Garnett

Beilstein J. Nanotechnol. 2018, 9, 2097–2105, doi:10.3762/bjnano.9.198

• illumination, Mie modes cannot be excited and instead coupling to waveguide modes (e.g., the HE11) and subsequent Fabry–Perot cavity interference play the dominant role in creating these hot spots [14][15]. The highly concentrated electric fields at the hot spots lead to elevated concentrations of

Nematic liquid crystal alignment on subwavelength metal gratings

• Irina V. Kasyanova,
• Artur R. Geivandov,
• Vladimir V. Artemov,
• Maxim V. Gorkunov and
• Serguei P. Palto

Beilstein J. Nanotechnol. 2018, 9, 42–47, doi:10.3762/bjnano.9.6

• detail in our work [9]), the spectra show pronounced fine oscillations caused by the Fabry–Perot effect. It is the Fabry–Perot effect that is used here to extract some information on the LC alignment near the grating surface. It is useful for further consideration to present the spectra as transmittance

• vs wavenumber (k = 1/λ) (Figure 4b). In this case, the almost constant period of the fine oscillations is more obvious. It follows from the simplest Fabry–Perot model considering only single reflections from each boundary that the contribution to the transmittance is: where "*" designates the complex

• = 1/3. For this grating both TM and TE-mode FT spectra show pronounced splitting. However, it is known [9] that for the gratings with this geometry there is a plasmon resonance for the TM mode and the transmittance resonance for the TE mode in the spectral range of 500–600 nm. Therefore, the Fabry

A top-down approach for fabricating three-dimensional closed hollow nanostructures with permeable thin metal walls

• Carlos Angulo Barrios and
• Víctor Canalejas-Tejero

Beilstein J. Nanotechnol. 2017, 8, 1231–1237, doi:10.3762/bjnano.8.124

• field intensity among the pillars is also significant, which points to the existence of a Fabry-Perot (FP) resonance between the top of the nanocages and the bottom Al layer. The reflectance peak might therefore result from a hybrid FP-LSP resonance. The governing formula for the fundamental FP peak

Zigzag phosphorene nanoribbons: one-dimensional resonant channels in two-dimensional atomic crystals

• Carlos. J. Páez,
• Dario. A. Bahamon,
• Ana L. C. Pereira and
• Peter. A. Schulz

Beilstein J. Nanotechnol. 2016, 7, 1983–1990, doi:10.3762/bjnano.7.189

• plateaus, evidencing also the well-known Fabry–Perot oscillations [25] due to the geometrical modulation. These effects are already well known for graphene and square lattice nanoribbons with constrictions [25][26][27][28][29]. The edge states, observed here in the energy range from 0.3 to 0 eV, drop to T

Precise in situ etch depth control of multilayered III−V semiconductor samples with reflectance anisotropy spectroscopy (RAS) equipment

• Ann-Kathrin Kleinschmidt,
• Lars Barzen,
• Johannes Strassner,
• Christoph Doering,
• Henning Fouckhardt,
• Wolfgang Bock,
• Michael Wahl and
• Michael Kopnarski

Beilstein J. Nanotechnol. 2016, 7, 1783–1793, doi:10.3762/bjnano.7.171

• range of photon energies between approx. 1.5 and 5.0 eV. Since layered samples optically represent coupled Fabry–Perot resonators, interferometric information can also be extracted from parts of the spectrum (for not too small wavelengths). Fabry–Perot oscillations can be observed with changing layer

• time-reversed due to erosion instead of growth) [8]. For a decreasing thickness of a layer of the sequence (a shrinking Fabry–Perot resonator thickness) there is a temporal evolution due to the current etch depth, which adds interferometric information, as stated earlier. While first results on the

• few) saves data collection time. In the RAS signal, according to Equation 1, Fabry–Perot oscillations could be suppressed, if both reflectivities in the numerator changed very similarly. On the contrary, as can be seen, e.g., in Figure 2, the average reflected intensity, corresponding to the DC output

Hollow plasmonic antennas for broadband SERS spectroscopy

• Gabriele C. Messina,
• Mario Malerba,
• Pierfrancesco Zilio,
• Ermanno Miele,
• Michele Dipalo,
• Lorenzo Ferrara and
• Francesco De Angelis

Beilstein J. Nanotechnol. 2015, 6, 492–498, doi:10.3762/bjnano.6.50

• . The field enhancement map shows several maxima as a function of the antenna height, which correspond to different orders of vertical Fabry–Perot resonances [23]. The calculations suggest that the maximum value of electromagnetic enhancement at around 630 nm excitation is 80 times the amplitude of the

Influence of spurious resonances on the interaction force in dynamic AFM

• Luca Costa and
• Mario S. Rodrigues

Beilstein J. Nanotechnol. 2015, 6, 420–427, doi:10.3762/bjnano.6.42

• both direct detection of the tip position, for example with Fabry–Perot interferometers, and classic optical beam deflection scheme, showing that the first method allows a much easier calculation of the interactions. We have proposed a calibration method of the cantilever response that is not based on

Localized surface plasmon resonances in nanostructures to enhance nonlinear vibrational spectroscopies: towards an astonishing molecular sensitivity

• Dan Lis and
• Francesca Cecchet

Beilstein J. Nanotechnol. 2014, 5, 2275–2292, doi:10.3762/bjnano.5.237

• provide any explanation about the amplification mechanism, they were able to ascribe the result to both optical and structural effects. More interestingly, the authors studied the possibility to increase the SFG signal of H-terminated surfaces in a photonic crystal structure, namely a Fabry–Perot