August 5, 2022
Advanced Photonics Congress 2022
COPS scientists have participated in the Advanced Photonics Congress 2022 in Maastricht from 24 to 28 July. This international congress was organized in a hybrid form by Optica (former OSA) with the goal to “cover the latest advancements in optical materials, optical signal processing, optical communications and integrated optics”. Ozan Akdemir, Marek Kozon, and Alfredo […]
July 18, 2022
Niels Alferink finishes his nanophotonics experiment
On 11th of July, Niels finished his nanophotonics experiments. Niels worked on a new setup for measuring transmission matrices of scattering media using a spatial light modulator (SLM). The title of his final presentation was “Road towards measuring transmission matrices”.
July 15, 2022
COPS visits Signify during FFSO-tour
On 14 July, COPS scientists and students visited the Signify facilities in Eindhoven as part of the NWO-TTW funded Free-Form Scattering Optics (FFSO) Perspectief program (https://www.freeformscatteringoptics.com/ PI: Willem Vos), that is executed by scientists at the technical universities of Eindhoven (TUe), Delft (TUD), and Twente (UT). Signify is the world leader in lighting. To stay […]
July 15, 2022
ETOPIM 2022 & Rolf Landauer Medal to Ad Lagendijk
COPS scientists have participated in the 12th International Conference on Elastic, Electrical, Transport, and Optical Properties of Inhomogeneous Media (ETOPIM12) in Besancon from 8 to 12 July. ETOPIM is held every three years with the goal of discussing the experimental and theoretical advances in the field of inhomogeneous media. During the conference, Ad Lagendijk received […]
June 27, 2022
Wave shaping 2022 Symposium: COPS=20, Harteveld=40, Lagendijk=75
Schedule for the “Wave shaping 2022” Symposium, on the occasion of COPS’ 20th anniversary, Cock Harteveld’s 40th jubilee, Ad Lagendijk 75th birthday. Hosted on July 1st, 2022 by Complex Photonic Systems (COPS), MESA+ Institute, Faculty of Science and Technology (S&T), University of Twente, Room Erlenmeyer in the Gallery & online. 09.00 – 10.00 Walk-in, coffee, […]
April 7, 2022
Successful nanophotonics masters practicum
On the 29th and 31st of May, the nanophotonics masters students descended on the COPS labs for the nanophotonics practicum. Over the course of two days, they partook in experiments on waveform shaping, mutual extinction, coherence and reflectivity, using four different optical setups. The students got to experience the practicalities of nanophotonics in a working […]
April 6, 2022
Between sense and nonsense: how much light travels through opaque materials?
Opaque scattering materials, such as paint, foam, and tissue, typically consist of many small particles that cause incident light waves to be scattered and absorbed. Understanding how much light travels through such materials is crucial for many applications ranging from atmospheric and climate sciences, oceanography, biophysics, powder technology, to modern light-emitting diode (LED) lighting. Following […]
February 22, 2022
Nanoparticles to make nanostructures function: a game of hide and seek?
Nanoparticles, inserted in the form of quantum dots in nanostructures, can make these nanostructures develop specific functions, notably in efficient miniature lasers and light-emitting diodes, photovoltaics, electric capacitors, gas sensors, energy conversion and batteries. Until today, scientists would place the nanoparticles inside randomly but would not know where exactly in the nanostructure they are. However, […]
November 29, 2021
How to turn ultrathin silicon black?
Silicon is the basic material that is used in our smart phones, in optical sensors, or in solar cells on our roofs. It is a major outstanding challenge that silicon absorbs incident light only weakly, especially in the red part of the visible spectrum. Recently, using extensive computations, COPS scientists have discovered that a 3D […]
November 26, 2021
Ultrafast switching of quantum dot emission in micropillar cavities: New COPS paper in Nature’s “Light Science & Applications” with Grenoble and Rio de Janeiro colleagues
In close collaboration with colleagues and friends from the Université Grenoble Alpes in France and the Pontifícia Universidade Católica do Rio de Janeiro in Brazil, we recently published a review in the Nature journal “Light: Science & Applications” on the (extremely) rapid switching of optical resonators by short pulses of light. The resonators are tiny […]
November 8, 2021
Successful Free-form scattering optics (FFSO) program meeting
For more information about available recordings and presentations, visit https://www.freeformscatteringoptics.com/ffso-program-meeting/. Dear guests (both live and online) and dear consortium members, Thank you for joining the FFSO Meeting on 1 November 2021. We enjoyed seeing so many of you live in Enschede. We were also very happy that many others were joining us online (where we […]
October 19, 2021
Manashee Adhikary successfully defended PhD thesis
On 14 October 2021, COPS PhD candidate Manashee Adhikary successfully defended her PhD thesis titled “Controlled light propagation random, periodic, and superperiodic silicon nanophotonic materials”, under the supervision and co-supervision of prof.dr. Willem Vos and dr. Ravitej Uppu, respectively, and obtained the doctoral degree. The doctoral committee consisted of prof.dr. W. Bogaerts from Ghent University […]