Proceedings Paper
Engineering, Electrical & Electronic
Lucas Bremer, Ksenia Weber, Sarah Fischbach, Simon Thiele, Marco Schmidt, Arsenty Kaganskiy, Sven Rodt, Alois Herkommer, Marc Sartison, Simone Luca Portalupi, Peter Michler, Harald Giessen, Stephan Reitzenstein
Summary: The study demonstrates the on-chip integration of a deterministically fabricated quantum dot micro-lens, a 3D-printed micro-objective, and a single-mode fiber-coupler, resulting in a quantum device with a broadband photon extraction efficiency and a coupling efficiency of 22%.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Article
Chemistry, Multidisciplinary
Sebastian Ulrich, Xiaopu Wang, Markus Rottmar, Rene Michel Rossi, Bradley J. Nelson, Nico Bruns, Ralph Muller, Katharina Maniura-Weber, Xiao-Hua Qin, Luciano Fernandes Boesel
Summary: This study presents the first photoresist for direct laser writing of photochromic 3D micro-objects via two-photon polymerization, enabling rapid processing of complex microstructures with excellent photoresponsiveness and reversible color-changing. The work provides a new approach for custom microfabrication of 3D photochromic objects with molecularly engineered color and responsiveness.
Article
Chemistry, Multidisciplinary
Gabriel L. Smith, Joshua B. Tyler, Nathan Lazarus, Harvey Tsang, Luis Viornery, Jeffrey Shultz, Sarah Bergbreiter
Summary: Many arachnids use internal hemolymph pressure to extend their leg joints, which is energy and volumetrically efficient. Advances in nano/microscale 3D printing now make it possible to create synthetic complex 'soft' joints that can be filled with hydraulic fluid into a sealed sub-millimeter system. Inspired by nature, researchers have demonstrated the smallest scale 3D-printed hydraulic actuator, mimicking arachnid joints for large displacement motions relative to body length. This microscale hydraulic actuation is promising for transmitting large forces and 3D motions at small scales.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiawen Li, Simon Thiele, Rodney W. Kirk, Bryden C. Quirk, Ayla Hoogendoorn, Yung Chih Chen, Karlheinz Peter, Stephen J. Nicholls, Johan W. Verjans, Peter J. Psaltis, Christina Bursill, Alois M. Herkommer, Harald Giessen, Robert A. McLaughlin
Summary: Multimodal microendoscopes enable simultaneous structural and molecular measurements in vivo, providing valuable insights into pathological changes associated with diseases. However, different optical imaging modalities have conflicting requirements for lens design, posing a challenge for the fabrication of miniaturized imaging probes. This study demonstrates an optical design using two-photon 3D printing to create a miniaturized lens that is optimized for both fluorescence and optical coherence tomography (OCT) imaging. The lens-in-lens design shows significant improvement in fluorescence sensitivity compared to conventional fiber-optic design approaches, and is successfully integrated into an intravascular catheter probe for simultaneous OCT and fluorescence imaging of a mouse artery in vivo.
Article
Multidisciplinary Sciences
Tomohiro Mori, Hao Wang, Wang Zhang, Chern Chia Ser, Deepshikha Arora, Cheng-Feng Pan, Hao Li, Jiabin Niu, M. A. Rahman, Takeshi Mori, Hideyuki Koishi, Joel K. W. Yang
Summary: Two-photon polymerization lithography is a promising technique for producing three-dimensional structures with user-defined micro- and nanoscale features. However, non-uniform shrinkage is a challenge in this process. In this study, researchers develop a simple method using poly(vinyl alcohol) to achieve uniform heat shrinking of three-dimensional micro-/nano-architected materials printed by two-photon polymerization lithography.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xiewen Wen, Boyu Zhang, Weipeng Wang, Fan Ye, Shuai Yue, Hua Guo, Guanhui Gao, Yushun Zhao, Qiyi Fang, Christine Nguyen, Xiang Zhang, Jiming Bao, Jacob T. Robinson, Pulickel M. Ajayan, Jun Lou
Summary: A 3D printing technique has been developed to create high-quality pure silica nanostructures with sub-200 nm resolution and the flexible capability of rare-earth element doping. The printed SiO2 structures show strong photoluminescence at desired wavelengths, making it ideal for building integrated microphotonics. This technique has the potential for exciting applications in three-dimensional micro- and nanophotonics.
Article
Nanoscience & Nanotechnology
You Xiao, Shuai Wei, Jiajia Xu, Ruoyan Ma, Xiaoyu Liu, Xiaofu Zhang, Tiger H. Tao, Hao Li, Zengqi Wang, Lixing You, Zhen Wang
Summary: The spectrometer combines a superconducting single-photon detector array and 3D-printed photonic-crystal filters, achieving a system sensitivity down to -108.2 dBm and a resolution of 5 nm from 1200 to 1700 nm.
Review
Materials Science, Multidisciplinary
Diana Gonzalez-Hernandez, Simonas Varapnickas, Andrea Bertoncini, Carlo Liberale, Mangirdas Malinauskas
Summary: The field of 3D micro-optics is rapidly expanding, with key advances in femtosecond laser direct-write 3D multi-photon lithography. Micro-optics fabricated via this technique have shown impressive potential in beam shaping, advanced imaging, optical sensing, and integrated photonic circuits, attracting increasing industrial interest.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Parvathi S. Nair, Jonathan Trisno, Hongtao Wang, Joel K. W. Yang
Summary: The paper introduces a socket design that allows easy insertion of fibers, automatic alignment, and coupling to micro-optical components, manufactured using nanoscale 3D printing technology on glass substrates. Research shows that this socket design can achieve high alignment accuracy and is applicable to optical elements for telecom wavelengths, with a wide range of customizable applications.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2021)
Article
Optics
Theodoros Anagnos, Mareike Trappen, Blaise C. Kuo Tiong, Tobias Feger, Stephanos Yerolatsitis, Robert J. Harris, Julien Lozi, Nemanja Jovanovic, Tim A. Birks, Sebastien Vievard, Olivier Guyon, Itandehui Gris-Sanchez, Sergio G. Leon-Saval, Barnaby Norris, Sebastiaan Y. Haffert, Phillip Hottinger, Matthias Blaicher, Yilin Xu, Christopher H. Betters, Christian Koos, David W. Coutts, Christian Schwab, Andreas Quirrenbach
Summary: By combining integral field spectroscopy with extreme adaptive optics, objects can now be resolved close to the diffraction limit of large telescopes, opening up new scientific possibilities. A customized integral field unit with a 3D-printed micro-lens array on top of a custom single-mode multi-core fiber has been introduced to optimize the coupling of light into the fiber cores, achieving promising results in initial on-sky runs at the 8.2m Subaru Telescope.
Article
Engineering, Electrical & Electronic
Peihang Li, Peng Yu, Wenhao Wang, Feng Lin, Hongxing Xu, Zhiming Wang
Summary: This study introduces the use of plasmonic nanoantennas and metal hybrid structures to enhance the single-photon emission rate and directional radiation of individual III-V quantum dots, shedding light on their potential as single-mode waveguides.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
M. V. Rakhlin, A. I. Galimov, I. V. Dyakonov, N. N. Skryabin, G. V. Klimko, M. M. Kulagina, Yu. M. Zadiranov, S. V. Sorokin, I. V. Sedova, Yu. A. Guseva, D. S. Berezina, Yu. M. Serov, N. A. Maleev, A. G. Kuzmenkov, S. I. Troshkov, K. V. Taratorin, A. K. Skalkin, S. S. Straupe, S. P. Kulik, T. V. Shubina, A. A. Toropov
Summary: The characteristics of a single-photon emitter based on a semiconductor quantum dot depend on the stability of the recombination channel. A study shows that dominant recombination through neutral exciton states can be achieved by controlling the doping profile near the quantum dot. Experimental results demonstrate high indistinguishability and brightness of successively emitted single photons, enabling spatio-temporal demultiplexing of photons in six independent spatial modes.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Sukjun Kim, Regan Kubicek, Sarah Bergbreiter
Summary: This study presents a novel fabrication process that combines 3D printing with two-photon polymerization and flexible printed circuit boards (FPCBs) to develop flexible microsystems with 3D-printed electrostatic microactuators. The method allows for the creation of flexible integrated micromirror arrays and legged microrobots. The microactuators are robust enough to function while the devices are deformed and can easily be integrated with off-the-shelf electronics. The legged microrobot, actuated by 3D electrostatic actuators, achieves a locomotion speed of 0.27 body length per second without the need for external fields. This fabrication framework opens up new possibilities for highly integrated flexible microsystems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Lena Engel, Sascha Kolatschek, Thomas Herzog, Sergej Vollmer, Michael Jetter, Simone L. Portalupi, Peter Michler
Summary: In this study, the coupling of a truncated Gaussian-shaped microcavity to a quantum dot (QD) was achieved using wet-chemical etching and epitaxial semiconductor overgrowth. Experimental results confirmed the agreement with simulations in terms of cavity modes and their spatial profiles. By tuning the temperature, transitions of a QD inside the cavity between resonance and off resonance were successfully achieved. The Purcell enhancement effect and the single-photon characteristic of the QD were preserved, as evidenced by a reduced decay time and second-order correlation measurements.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Stuart Scott, John Chew, Jonathan Barnard, Andrew Burrows, Martin Smith, Steven Tennison, Semali Perera
Summary: This study presents the manufacture of tailored carbon-based adsorbent structures with low-pressure drops and improved kinetics using stereolithographic 3D printing. The activated 3D printed carbon achieves high surface areas and exceptional adsorption capacities. These structures demonstrate excellent adsorption kinetics and offer potential applications in gas separation technologies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Lukasz Dusanowski, Cornelius Nawrath, Simone L. Portalupi, Michael Jetter, Tobias Huber, Sebastian Klembt, Peter Michler, Sven Hoefling
Summary: This study demonstrates a solid-state spin-qubit platform based on a hole confined in a semiconductor quantum dot that emits telecom-band photons. The researchers showcase the control and manipulation of the hole, enabling its use in long-distance quantum communication. This work is significant for the development of solid-state quantum emitters compatible with existing optical fiber networks.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Robert Sittig, Cornelius Nawrath, Sascha Kolatschek, Stephanie Bauer, Richard Schaber, Jiasheng Huang, Ponraj Vijayan, Pascal Pruy, Simone Luca Portalupi, Michael Jetter, Peter Michler
Summary: In this study, a novel InGaAs metamorphic buffer is developed using metal-organic vapor-phase epitaxy (MOVPE) with a nonlinear indium content grading profile. The thin-film buffer allows for the necessary transition of the lattice constant and provides a smooth surface for the growth of InAs quantum dots, resulting in single-photon emission at 1550 nm. The successful integration of this new design into a photonic resonator demonstrates its potential for high-quality nonclassical light sources in telecommunication.
Article
Optics
Abdullah Alabbadi, Tobias Steinle, Harald Giessen
Summary: We present a compact and passively stable optical parametric oscillator that can directly generate sub-40 fs pulses, five times shorter than the 200 fs pump oscillator. By utilizing an intracavity all normal dispersion feedback fiber, we have achieved low-noise and coherent broadening beyond the bandwidth limitation of the parametric gain. The demonstrated spectral coverage ranges from 1.1 to 2.0 μm with excellent passive power and spectral stability below 0.1% rms, all in a compact footprint smaller than 14x14 cm(2).
Article
Chemistry, Multidisciplinary
Jiawen Li, Simon Thiele, Rodney W. Kirk, Bryden C. Quirk, Ayla Hoogendoorn, Yung Chih Chen, Karlheinz Peter, Stephen J. Nicholls, Johan W. Verjans, Peter J. Psaltis, Christina Bursill, Alois M. Herkommer, Harald Giessen, Robert A. McLaughlin
Summary: Multimodal microendoscopes enable simultaneous structural and molecular measurements in vivo, providing valuable insights into pathological changes associated with diseases. However, different optical imaging modalities have conflicting requirements for lens design, posing a challenge for the fabrication of miniaturized imaging probes. This study demonstrates an optical design using two-photon 3D printing to create a miniaturized lens that is optimized for both fluorescence and optical coherence tomography (OCT) imaging. The lens-in-lens design shows significant improvement in fluorescence sensitivity compared to conventional fiber-optic design approaches, and is successfully integrated into an intravascular catheter probe for simultaneous OCT and fluorescence imaging of a mouse artery in vivo.
Article
Materials Science, Multidisciplinary
Simon Ristok, Philipp Flad, Harald Giessen
Summary: 3D printing of micro-optics is a powerful method for fabricating sub-millimeter sized optics. By utilizing conformal low-temperature thermal atomic layer deposition, we are able to overcome the limitation of coating individual lenses in 3D printed optical systems. Our 4-layer design reduces the reflectivity of coated substrates in the visible range to below 1%. We find that the reflectivity is significantly reduced and transmission is enhanced, which is particularly important for low-light applications.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Philipp Karl, Sandra Mennle, Monika Ubl, Mario Hentschel, Philipp Flad, Jing-Wei Yang, Tzu-Yu Peng, Yu-Jung Lu, Harald Giessen
Summary: The development of photon-based technologies such as quantum cryptography and quantum computing relies on high-fidelity and fast photodetectors capable of detecting single photons. Superconducting nanowire single photon detectors, utilizing the superconducting-to-normal conducting phase transition, offer a promising solution. Using resonant plasmonic perfect absorber effects, these detectors can achieve high efficiency, polarization-independent absorption at a specific wavelength. Additionally, the target wavelength can be easily adjusted by modifying the detector's geometry.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Armando Ricciardi, Michael Zimmer, Norbert Witz, Alberto Micco, Federica Piccirillo, Martino Giaquinto, Mathias Kaschel, Joachim Burghartz, Michael Jetter, Peter Michler, Andrea Cusano, Simone Luca Portalupi
Summary: This study presents a method to integrate optoelectronic chips onto optical fibers, achieving electrical contacting and light in-coupling. The successful integration of a laser onto a fiber opens new possibilities for the development of optoelectronic systems on fiber.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Hongfeng Ma, Nicolas Dalloz, Amaury Habrard, Marc Sebban, Florian Sterl, Harald Giessen, Mathieu Hebert, Nathalie Destouches
Summary: This article explores the use of deep neural networks and laser processing technology to predict the optical properties of laser-induced plasmonic metasurfaces and achieve printing image multiplexing. The study validates the effectiveness of the deep learning approach and provides a simple mining algorithm for implementing multiplexing with multiple observation modes and colors. This research is important for optimizing laser processes in high-end applications such as security, entertainment, or data storage.
Article
Optics
Julian Schwab, Ksenia Weber, Johannes Drozella, Carlos Jimenez, Alois Herkommer, Lucas Bremer, Stephan Reitzenstein, Harald Giessen
Summary: This study discusses the coupling efficiency of single-photon sources into single-mode fibers using 3D printed micro-optical lens designs. It optimizes lens systems for two different quantum light sources and evaluates the results in terms of maximum coupling efficiencies, misalignment effects, and thermo-optical influences.
Article
Chemistry, Analytical
Diana Pfezer, Julian Karst, Mario Hentschel, Harald Giessen
Summary: The detection and quantification of glucose in human blood or ocular fluid is crucial for diabetes patients. In this study, plasmonic nanoantennas and PCA were used to enhance the detection of glucose and other saccharides in complex aqueous environments. The results showed that the sensor achieved reliable detection and discrimination of saccharide concentrations down to physiological levels, which will greatly improve the detection of biomolecules in different complex environments.
Article
Quantum Science & Technology
Pavel Ruchka, Sina Hammer, Marian Rockenhauser, Ralf Albrecht, Johannes Drozella, Simon Thiele, Harald Giessen, Tim Langen
Summary: This paper introduces a new trapping concept for ultracold atoms in optical tweezers using micrometer-scale lenses 3D printed onto the tip of standard optical fibers. These lenses have unique properties that make them suitable for both trapping individual atoms and capturing their fluorescence with high efficiency. The vacuum compatibility and robustness of the structures were tested in an exploratory experiment and a magneto-optical trap for ultracold atoms was successfully formed, showing promise for portable atomic quantum devices.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Quantum Science & Technology
Mathieu Bozzio, Michal Vyvlecka, Michael Cosacchi, Cornelius Nawrath, Tim Seidelmann, Juan C. Loredo, Simone L. Portalupi, Vollrath M. Axt, Peter Michler, Philip Walther
Summary: “Quantum dot-based single-photon sources offer additional security benefits and coherence tunability for quantum cryptography. We benchmark their performance compared to other sources and highlight the advantages of using phonon-assisted and two-photon excitation for quantum key distribution and other primitives.”
NPJ QUANTUM INFORMATION
(2022)
Article
Physics, Applied
Lena Engel, Sascha Kolatschek, Thomas Herzog, Sergej Vollmer, Michael Jetter, Simone L. Portalupi, Peter Michler
Summary: In this study, the coupling of a truncated Gaussian-shaped microcavity to a quantum dot (QD) was achieved using wet-chemical etching and epitaxial semiconductor overgrowth. Experimental results confirmed the agreement with simulations in terms of cavity modes and their spatial profiles. By tuning the temperature, transitions of a QD inside the cavity between resonance and off resonance were successfully achieved. The Purcell enhancement effect and the single-photon characteristic of the QD were preserved, as evidenced by a reduced decay time and second-order correlation measurements.
APPLIED PHYSICS LETTERS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Johannes Drozella, Andrea Toulouse, Pascal Motzfeld, Nils Fahrbach, Valese Aslani, Simon Thiele, Alois M. Herkommer, Harald Giessen
Summary: Modern two-photon-polymerization 3D printing technology allows for the creation of complex freeform optical surfaces with high control and accuracy. However, there may still be some systematic deviation due to volumetric changes during the polymerization and development process. This paper presents a method to include repeatable measurements and shape correction during the production process of monolithically created complex freeform lens systems. An example of its application for creating low profile multi-aperture large field of view objectives is also provided.
LASER-BASED MICRO- AND NANOPROCESSING XVI
(2022)
Article
Nanoscience & Nanotechnology
Pascal Dreher, David Janoschka, Alexander Neuhaus, Bettina Frank, Harald Giessen, Michael Horn-von Hoegen, Frank-J Meyer Zu Heringdorf
Summary: This study utilizes spectroscopic photoemission microscopy to detect and quantify the energy shift of electrons emitted from a surface plasmon polariton focus. The field strength of the surface plasmon polariton was determined without free parameters based on the shift of electron peaks as function of laser power.
