Optical Cavity Based on GaN Planar Nanowires Grown by Selective Area Metal‐Organic Vapor Phase Epitaxy

Pozina, Galia; Иванов, К. А.; Mitrofanov, M. I.; Kaliteevski, M. A.; Morozov, K. M.; Levitskii, I. V.; Voznyuk, G. V.; Evtikhiev, V. P.; Rodin, S. N.

doi:10.1002/pssb.201800631

Cited by 10 publications

(7 citation statements)

References 27 publications

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“…The difference in quality between planar NWs oriented in different directions can be attributed to the dependence of the lateral and vertical growth rates on orientation. The shape of NWs is determined by slow-growing semi-polar {11 01} facets [23]. In addition, the emission, as revealed by the anchromatic CL map (figure 1(b)), is non-uniform across the facets, where the darker intensity contrast corresponds to areas with the presence of stacking faults.…”

Section: Resultsmentioning

confidence: 99%

Fröhlich resonance splitting in hybrid GaN nanowire-Ag nanoparticle structures

Pozina,

Girshova,

Abrikossova

et al. 2024

New J. Phys.

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Plasmonic nanoparticles (NPs) have attracted significant attention due to their unique optical properties and broad optoelectronic and photonic applications. We investigate modifications of emission in hybrid structures formed by 60 nm silver NPs and GaN planar nanowires (NWs). Bare GaN NWs exhibit photoluminescence (PL) spectra dominated by broad bands peaking at ~3.44 eV and ~3.33 eV, attributed to basal plane stacking faults. In hybrids, two new narrow PL lines appear at 3.36 and 3.31 eV, resulting in PL enhancement at these energies. While the 3.36 eV line in hybrid structures can be explained using the Fröhlich resonance approximation based on the electric dipole concept, the appearance of two features at 3.36 and 3.31 eV indicates the splitting of resonance lines. This phenomenon is explained in framework of theoretical model based on the interaction of the dipole with its charge image, taking into account the quadrupole moment of the silver sphere and the quadrupole field of the charge image. A good agreement is obtained between the calculated Fröhlich resonance frequencies and the experimental PL lines in hybrid structures.

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Section: Resultsmentioning

confidence: 99%

Fröhlich resonance splitting in hybrid GaN nanowire-Ag nanoparticle structures

Pozina,

Girshova,

Abrikossova

et al. 2024

New J. Phys.

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“…Травление решетки РБО вблизи заднего зеркала лазера (рис. 1) проведено в сверхвысоком вакууме фокусированным пучком ионов галлия c энергией 30 keV (рабочий ток 450 pA), сфокусированным в пятно диаметром 40 nm; величина шероховатости травленой поверхности не превышала 2 nm [19]. Доза облучения области РБО при травлении составляла 1.75 pC/cm 2 .…”

Section: поступило в редакцию 29 ноября 2019 г в окончательной редакunclassified

Квантово-Каскадные Лазеры С Распределенным Брэгговским Отражателем, Сформированным Методом Ионно-Лучевого Травления

Бабичев¹,

Pashnev

Гладышев³

et al. 2020

Письма В Журнал Технической Физики

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Single-frequency lasing of quantum-cascade lasers with a distributed Bragg reflector formed by the focused ion beam milling technique in the layers of the upper cladding of the waveguide is demonstrated. The active region In0.53Ga0.47As/Al0.48In0.52As is formed based on the scheme with two-phonon lower energy level depopulation in the cascade. Single-frequency lasing at a temperature of 280 K corresponded to a radiation wavelength of 7.74 μm; the side mode suppression ratio (SMSR) was 24 dB.

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“…Одним из примеров такого подхода является селективная газофазная эпитаксия. В работе [7] показана возможность формирования методом селективной газофазной эпитаксии из металлоорганических соединений (ГФЭМОС) различных субмикрометровых объектов из GaN. В частности, данным методом могут выращиваться нановискеры [8].…”

Section: Introductionunclassified

Сильная связь экситонов в микрорезонаторах GaN гексагональной формы

Белоновский¹,

Pozina

Левитский³

et al. 2020

Физика И Техника Полупроводников

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The GaN planar hexagonal microcavities were grown by a selective vapor phase epitaxy. The spectra were measured by the low-temperature cathodoluminescence method in-situ scanning electron microscope. The obtained spectra show a huge Rabi splitting (in order of 100 meV). Numerical simulation of the spatial distribution of the modes’ intensities of a hexagonal resonator is shown. Some modes can have strong spatial localization, leading to strong coupling with the exciton and huge Rabi splitting. Theoretically, we calculated the fraction of excitons in polariton modes, which correlates with the intensity of exciton radiation associated with these modes, for microcavities of a hexagonal shape. Thus, we have obtained the form of the dependence of the radiation probability on the eigenfrequencies of the structure.

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Optical Cavity Based on GaN Planar Nanowires Grown by Selective Area Metal‐Organic Vapor Phase Epitaxy

Cited by 10 publications

References 27 publications

Fröhlich resonance splitting in hybrid GaN nanowire-Ag nanoparticle structures

Fröhlich resonance splitting in hybrid GaN nanowire-Ag nanoparticle structures

Квантово-Каскадные Лазеры С Распределенным Брэгговским Отражателем, Сформированным Методом Ионно-Лучевого Травления

Сильная связь экситонов в микрорезонаторах GaN гексагональной формы

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