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Kalsbeek, Mark (author)This paper presents the design of a lab-scale silicon nitride photonic crystal lightsail, demonstrating the LightSailSim software package. LightSailSim, an open-source analysis pipeline, integrates a custom mechanical solver based on a particle system model with optical simulation results. The resulting design balances dynamic and structural...master thesis 2024
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Chang, J. (author), Ji, W. (author), Yao, X. (author), van Run, A.J. (author), Groeblacher, S. (author)Highly ambitious initiatives aspire to propel a miniature spacecraft to a neighboring star within a human generation, leveraging the radiation pressure of lasers for propulsion. One major challenge for this enormous feat is to build a meter-scale, ultralow mass lightsail with broadband reflectivity. In this work, we present the design and...journal article 2024
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Siemons, M. E. (author), Hagenaar, M. (author), Adam, A.J.L. (author), Kohlhaas, R. (author)Recently a spectrometer concept has been invented which uses compressive sensing in combination with photonic crystal filters. Here we present an adaption of this concept in push-broom configuration for earth observation. This implementation allows for a compact design, while maintaining a high spatial resolution and high signal-to-noise...conference paper 2023
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Abutan, Lisanne (author)Interference of light can be used to determine the concentration of a gas, called gas sensing. The absorption of the light by the gas molecules is measured based on the phase change of the light. In this report, a hollow core photonic crystal fiber is treated. The gas sample is inserted into the hollow core. Photonic crystal fibers possess the...bachelor thesis 2022
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Leermakers, Lauran (author)Due to the demand for renewable energies, gasses likeH2 need to be detected with sensitive, accurate and fast detectors. The US Department of Energy has made a list of requirements that H2 sensors need to fullfill of which the minimum detectable concentration (0.1%) and the reaction time (one second) are challenging for current hydrogen sensors,...master thesis 2022
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Barczyk, R.T. (author), Parappurath, Nikhil (author), Arora, S. (author), Bauer, T.A. (author), Kuipers, L. (author), Verhagen, Ewold (author)The introduction of topological concepts to the design of photonic crystal cavities holds great promise for applications in integrated photonics due to the prospect of topological protection. This study examines the signatures of topological light confinement in the leakage radiation of 2D topological photonic crystal cavities. The cavities are...journal article 2022
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Daem, Nathan (author), Mayer, Alexandre (author), Spronck, Gilles (author), Colson, Pierre (author), Loicq, J.J.D. (author), Henrist, Catherine (author), Cloots, Rudi (author), Maho, Anthony (author), Lobet, Michael (author)Light management strategies using photonic crystals have been proven to efficiently improve light harvesting and subsequently conversion efficiency of various optoelectronic devices. This study focuses on 3D inverse opal CH3NH3PbI3 photoanodes in perovskite solar cells from a combined numerical and experimental approach. Varying the pore size...journal article 2022
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Yengül, Damla (author)A research gap exists in a targeted drug delivery into the brain with an implant placed on the outer surface of the cerebral cortex. If an implant with spatial control that can release drugs to a target location can be developed, it will provide efficient treatment opportunities for a variety of brain disorders such as strokes. One of the...master thesis 2021
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Drimmer, Maxwell (author)The defining challenge of connecting NISQ quantum computers over large distances is efficient microwave to optical transduction. In this work, we demonstrate a new platform for piezo-optomechanical conversion by combining a crystalline silicon nanobeam photonic crystal cavity and a suspended thin-film lithium niobate acoustic resonator. The goal...master thesis 2020
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Christensen, Thomas (author), Loh, Charlotte (author), Picek, S. (author), Jakobović, Domagoj (author), Jing, Li (author), Fisher, Sophie (author), Ceperic, Vladimir (author), Joannopoulos, John D. (author), Soljačić, Marin (author)The prediction and design of photonic features have traditionally been guided by theory-driven computational methods, spanning a wide range of direct solvers and optimization techniques. Motivated by enormous advances in the field of machine learning, there has recently been a growing interest in developing complementary data-driven methods...journal article 2020
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Pinto Moura, J.P. (author)Cavity optomechanics studies the interaction between mechanical resonators and optical cavities through radiation pressure forces and aims to harness this interaction for applications in the areas of high precision metrology, tests of fundamental quantum mechanics, or quantum information processing. For the most ambitious of these applications...doctoral thesis 2019
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Gartner, C.M. (author), Moura, João P. (author), Haaxman, Wouter (author), Norte, R.A. (author), Groeblacher, S. (author)Multielement cavity optomechanics constitutes a direction to observe novel effects with mechanical resonators. Several exciting ideas include superradiance, increased optomechanical coupling, and quantum effects between distinct mechanical modes among others. Realizing these experiments has so far been difficult, because of the need for...journal article 2018
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Alpeggiani, F. (author), Parappurath, N. (author), Verhagen, Ewold (author), Kuipers, L. (author)The scattering matrix is a fundamental tool to quantitatively describe the properties of resonant systems. In particular, it enables the understanding of many photonic devices of current interest, such as photonic metasurfaces and nanostructured optical scatterers. In this contribution, we show that the scattering matrix of a photonic system...conference paper 2017
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Guo, Jingkun (author)In recent years, cavity optomechanics has attracted lots of attention. In this system, photons inside a cavity interact with a macroscopic harmonic oscillator through the radiation pressure force. Depending on the type of structure, opto-mechanical systems can be used in, for example, precision sensing, including force and acceleration...master thesis 2017
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Parappurath, N. (author), Alpeggiani, F. (author), Kuipers, L. (author), Verhagen, Ewold (author)We observe that the asymmetric transmission (AT) through photonic systems with a resonant chiral response is strongly related to the far-field properties of eigenmodes of the system. This understanding can be used to predict the AT for any resonant system from its complex eigenmodes. We find that the resonant chiral phenomenon of AT is...journal article 2017
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Simbula, A. (author), Schatzl, M. (author), Alpeggiani, F. (author), Andreani, L.C. (author), Schäffler, F. (author), Fromherz, T. (author), Galli, M. (author), Gerace, D. (author)We report on the realization of high-Q/V photonic crystal cavities in thin silicon membranes, with resonances around 1.55 μm wavelength. The cavity designs are based on a recently proposed photonic crystal implementation of the Aubry-André-Harper bichromatic potential, defined from the superposition of two one-dimensional lattices with a non...journal article 2017
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Liu, Y. (author), Salemink, H.W.M. (author)A planarized on-chip nanophotonic sensor based on a photonic crystal cavity is realized in this work. The sensor was embedded in a solid protecting material (flowable oxide) with perfect filled holes: this eliminates problems of fouling in practical applications. The functional area of the sensor is created by carefully removing the...journal article 2017
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Liu, Y. (author), Salemink, H.W.M. (author)We report the results of a study of an optical sensor based on a channel-drop technique with two cascaded cavities in photonic-crystal slabs. Quality factors and intensities of the resonant modes of the sensor were analyzed with three-dimensional simulations. With the introduction of a reflector in the bus-channel and by control of the coupling...journal article 2015
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Liu, Y. (author), Salemink, H.W.M. (author)A highly sensitive sensor design based on two-dimensional photonic crystal cavity is demonstrated. The geometric structure of the cavity is modified to gain a high quality factor, which enables a sensitive refractive index sensing. A group of slots with optimized parameters is created in the cavity. The existence of the slots enhances the light...journal article 2015
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Van Leest, M.M. (author)In monitoring the quality of drinking water with respect to the presence of hazardous bacteria, there is a strong need for in-line sensors that allow quick identification of bacterium species at low cost. Raman spectroscopy is a very promising label-free optical technique capable of discriminating bacteria species based on their molecular...doctoral thesis 2014