76 citations · 229 across the 21 of their papers we have counts for
24 papers
Diamond membranes: platform for photonic and opto-mechanical applications
Hsin-Hui Huang, Gediminas Seniutinas, Haoran Mu +8
Diamond 1 - 10 micrometers thick membranes are platform for photonic, quantum and opto-mechanic devices with applications across UV-IR spectral ranges. IR characterization of diamo…
Stabilisation of NV centres in diamond nanopillars at low temperature
Ravi Kumar, Saksham Mahajan, Felix Donaldson +8
Degradation of near surface nitrogen vacancy (NV) centers in diamond under optical illumination has restricted their deployment in applications such as scanning NV magnetomety, par…
Structure orientation determined in transmission and reflection: q-plate
Hsin-Hui Huang, Meguya Ryu, Shuji Kamegaki +9
Determination of orientation in the imaged sample/scene has a large application potential when the anisotropy of properties is analysed, usually, under a linearly polarised illumin…
Antiferromagnetic nanoscale bit arrays of magnetoelectric CrO thin films
Peter Rickhaus, Oleksandr V. Pylypovskyi, Gediminas Seniutinas +12
Magnetism of oxide antiferromagnets (AFMs) has been studied in single crystals and extended thin films. The properties of AFM nanostructures still remain underexplored. Here, we re…
Bessel-beam direct-write of the etch-mask in a nano-film of alumina for high-efficiency Si solar cells
Tomas Katkus, Soon Hock Ng, Haoran Mu +14
Large surface area applications such as high-efficiency > 26% solar cells require surface patterning with 1-10 micrometers periodic patterns at high fidelity over 1-10 cm^2 areas (…
Effect of intense x-ray free-electron laser transient gratings on the magnetic domain structure of Tm:YIG
Victor Ukleev, Max Burian, Sebastian Gliga +13
Magnetic patterns can be controlled globally using fields or spin polarized currents. In contrast, the local control of the magnetization on the nanometer length scale remains chal…
Beyond Lambertian light trapping for large-area silicon solar cells: fabrication methods
Jovan Maksimovic, Jingwen Hu, Soon Hock Ng +7
Light trapping photonic crystal (PhC) patterns on the surface of Si solar cells provides a novel opportunity to approach the theoretical efficiency limit of 32.3%, for light-to-ele…
Hard X-ray Transient Grating Spectroscopy on Bismuth Germanate
Jeremy R. Rouxel, Danny Fainozzi, Roman Mankowsky +44
Optical-domain Transient Grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique used to probe vibrational, magnetic and electronic degrees of freedom i…
All femtosecond optical pump and X-ray probe: holey-axicon for free electron laser
V. Anand, J. Maksimovic, T. Katkus +21
We put forward a co-axial pump(optical)-probe(X-rays) experimental concept and show performance of the optical component. A Bessel beam generator with a central 100 micrometers-dia…
Lithography-free Kirchhoff's Metasurfaces
Takuhiro Kumagai, Naoki To, Armandas Balcytis +3
Lithography-free metasurfaces composed of a nano-layered stack of materials are attractive not only due to their optical properties but also by virtue of fabrication simplicity and…
Optimal architecture for diamond-based wide-field thermal imaging
R. Tanos, W. Akhtar, S. Monneret +11
Nitrogen-Vacancy centers in diamond possess an electronic spin resonance that strongly depends on temperature, which makes them efficient temperature sensor with a sensitivity down…
Beyond 100 nm Resolution in 3D Laser Lithography: Post Processing Solutions
G. Seniutinas, A. Weber, C. Padeste +3
Laser polymerization has emerged as a direct writing technique allowing the fabrication of complex 3D structures with microscale resolution. The technique provides rapid prototypin…
Kirchhoff's metasurfaces
Yoshiaki Nishijima, Armandas Balcytis, Shin Naganuma +2
Thermo-optical properties of the nanodisc and metal hole array plasmonic perfect absorber (PPA) metasurfaces were designed and characterised at midinfrared wavelengths. Both, light…
Single crystal diamond membranes containing germanium vacancy color centers
Kerem Bray, Blake Regan, Aleksandra Trycz +6
Single crystal diamond membranes that host optically active emitters are highly attractive components for integrated quantum nanophotonics. In this work we demonstrate bottom-up sy…
Tunable kinoform x-ray beam splitter
Maxime Lebugle, Gediminas Seniutinas, Felix Marschall +3
We demonstrate an x-ray beam splitter with high performances for multi-kilo-electron-volt photons. The device is based on diffraction on kinoform structures, which overcome the lim…
Gigahertz optomechanical modulation by split-ring-resonator nanophotonic meta-atom arrays
Y. Imade, R. Ulbricht, M. Tomoda +4
Using polarization-resolved transient reflection spectroscopy, we investigate the ultrafast modulation of light interacting with a metasurface consisting of coherently vibrating na…
Optical readout of hydrogen storage in films of Au and Pd
Yoshiaki Nishijima, Shogo Shimizu, Keisuke Kurihara +10
For hydrogen sensor and storage applications, films of Au and Pd were (i) co-sputtered at different rates or (ii) deposited in a sequential layer-by-layer fashion on a cover glass.…
Room temperature single photon emission from oxidized tungsten disulphide multilayers
Toan Trong Tran, Sumin Choi, John A. Scott +7
Two dimensional systems offer a unique platform to study light matter interaction at the nanoscale. In this work we report on robust quantum emitters fabricated by thermal oxidatio…
Engineering and localization of quantum emitters in large hexagonal boron nitride layers
Sumin Choi, Toan Trong Tran, Christopher ElBadawi +6
Hexagonal boron nitride (hBN) is a wide bandgap van der Waals material that has recently emerged as promising platform for quantum photonics experiments. In this work we study the…
Laser structuring for control of coupling between THz light and phonon modes
X. W. Wang, G. Seniutinas, A. Balcytis +8
Modification of surface and volume of sapphire is shown to affect reflected and transmitted light at THz spectral range. Structural modifications were made using ultra-short 230 fs…
Au-Ag-Cu nano-alloys: tailoring of permittivity
Yoshikazu Hashimoto, Gediminas Seniutinas, Armandas Balcytis +2
Precious metal alloys enables new possibilities to tailor materials for specific optical functions. Here we present a systematic study of the effects of a nanoscale alloying on the…
Solar water splitting: efficiency discussion
Jurga Juodkazyte, Gediminas Seniutinas, Benjaminas Sebeka +5
The current state of the art in direct water splitting in photo-electrochemical cells (PECs) is presented together with: (i) a case study of water splitting using a simple solar ce…
UV-photoelectric effect for augmented contrast and resolution in electron microscopy
Gediminas Seniutinas, Armandas Balcytis, Saulius Juodkazis
A new tool providing material contrast control in scanning electron microscopy (SEM) is demonstrated. The approach is based on deep-UV illumination during SEM imaging and delivers…
Percolation threshold gold films on columnar coatings: characterisation for SERS applications
Armandas Balcytis, Tomas Tolenis, Xuewen Wang +4
Percolation of gold films of ~15 nm thickness was controlled to achieve the largest openings during Au deposition. Gold was evaporated on 300-nm-thick films of nanostructured porou…