Research Area Sessions
1Advanced materials & devices, chaired by dr.ir. Floris Zwanenburg & dr.ir. Gertjan Koster
2Fluidics & microsystems, chaired by dr.ir. Mathieu Odijk & dr. David Fernandez Rivas
3Photonics & (bio)systems, chaired by dr.ir. Annemarie Huijser & prof.dr. Pepijn Pinkse
4Soft matter & devices, chaired by dr. Saskia Lindhoud & dr. Tibor Kudernac
Photonics & (bio)systems (ROOM 7)
Chairs: dr.ir. Annemarie Huijser (Optical Sciences) & prof.dr. Pepijn Pinkse (Complex Photonic Systems
INTRODUCTION
This parallel session focuses on advanced periodic nanostructures ranging from photonic crystals to multilayer mirrors and plasmonic antennas. The speakers use advanced optical techniques to characterize these nanostructures, including near-field imaging and pulse shaping.
Program
11.30 | Short introduction by Annemarie Huijser/Pepijn Pinkse |
11.45 | Tom A.W. Wolterink (COPS & LPNO) Programmable quantum interference in massively multichannel networks |
12.00 | Frank J. Timmermans (MCBP) Quantitative Analysis of Plasmonic Nanostructures with Integrated Correlative SEM - SERS Microscopy |
12.15 | Caterina Taballione (LPNO) Self-calibrating wavelength meter based on a birefringent microring resonator |
12.30 | Sergio Vazquez-Cordova (OS) Dielectric waveguide amplifiers |
ABSTRACTS
Programmable quantum interference in massively multichannel networks
Tom A.W. Wolterink MSc. (Complex Photonic Systems & Laser Physics & Nonlinear Optics)
We demonstrate quantum interference in multiple-scattering materials. Starting with on the order of 10^3 coupled channels we create the equivalent of a 2x2 linear optical circuit with programmable correlations by adaptive phase modulation of incident wavefronts. This results in fully programmable Hong-Ou-Mandel interference, showing bunching as well as antibunching of output photons. Our results establish multiple-scattering materials as a platform for adaptive high-dimensional quantum interference experiments, as required, e.g., for boson sampling. Moreover, since multiple-scattering materials are excellent physical unclonable functions for use as optical keys in quantum-secure authentication, our results show the feasibility of including optical keys in other quantum-information protocols.
Quantitative Analysis of Plasmonic Nanostructures with Integrated Correlative SEM - SERS Microscopy
Frank J. Timmermans MSc. (Medical Cell BioPhysics)
The combination of light and electron microscopy enables the correlation of high resolution electron microscopic analysis with molecular identification and chemical specificity. Raman microscopy is a label free optical technique enabling chemical specific micro-spectroscopic analysis. The use of plasmonic structures enables an enormous enhancement of the Raman signal in surface enhanced Raman spectroscopy (SERS), enabling applications for sensors and labels.
An integrated correlative Raman – FIB – SEM system is applied for SERS analysis of plasmonic structures. The combination of SERS, with high resolution electron microscopy provides accurate analysis suitable for any plasmonic nanostructure. The Raman measured signal enhancement factor is compared with enhancement factors calculated from near field simulations based on the SEM observed structure morphology. This enables correlative light and electron characterization of the structure’s plasmonic properties. It is applied for many nanoparticle clusters, with specific interest in dimer structures with a varying gapsize and orientation.
Self-calibrating wavelength meter based on a birefringent microring resonator
Caterina Taballione MSc. (Laser Physics & Nonlinear Optics)
The photonic integration of wavelength meters is a crucial step for the scalability of many applications, i.e., wavelength division multiplexing and optical communication, and it would lead to more compact and stable devices with comparable or even better performances than commercially available wavemeters. However such integrated devices can run easily out of calibration, e.g., through thermal drift, giving errors in the displayed wavelength. A universal approach to reduce errors is to increase the number of measurements of the wavelength and apply probability considerations. What is then needed is a smart readout algorithm which assigns a higher likelihood to wavelengths near the true value and that uses disagreements within the measurement to adjust the calibration progressively; this latter property can be named self-calibration.
We show how smart readout is employed to demonstrate a self-calibrating wavelength meter based on a tunable micro ring resonator on a chip. We mimic thermal drifts by applying temperature changes and confirm the supposed robustness of the spectrometer readout. Furthermore we investigate the potential of birefringence as an option for enlarging the free spectral range of the wavemeter.
Dielectric waveguide amplifiers
Sergio Vazquez-Cordova MSc. (Optical Sciences)
Integrated optical waveguide amplifiers are required for the regeneration of signals in several domains ranging from bio-sensing to telecommunication applications. The 4I13/2 - 4I15/2 transition in erbium-doped dielectric materials is used for amplification in the infrared spectrum around 1.5 µm. Understanding of the spectroscopic processes involved during amplification of signals is paramount for the design of a waveguide amplifier. Two different platforms; aluminum oxide and potassium double tungstates are discussed. Energy transfer up-conversion, concentration dependent quenching and excited-state absorption are found to be the most detrimental spectroscopic processes reducing the attainable gain at ~1.53 µm. Experimental and simulated gain are in accordance only when all spectroscopic processes are considered.