Nanoscale Light-Matter Interactions
with Markus Raschke
Molecular and quantum-state interactions at the nanoscale are at the basis of molecular electronics, organic light-emitting diodes, photovoltaics, and biochemical processes. Optical tip-enhanced nano-imaging combined with ultrafast lasers makes it possible to image the underlying electronic and vibrational excitations on their natural nanometer length and over femtosecond times scales.
In this webinar, Markus Raschke (University of Colorado at Boulder) will present the emerging field of tip-enhanced scanning probe microscopy for precision spectroscopy, ultrafast-nano-imaging, and – in the strong coupling limit – for cavity quantum electrodynamics (nano-cQED). Looking at technical implementations, Claudius Riek (Zurich Instruments) will show how to maximize the signal and image information content using advanced measurement instrumentation; you will learn how to perform simultaneous multi-sideband analysis with a lock-in amplifier and how to study non-sinusoidal signals with a Boxcar averager.
May 26th, 2020
Claudius Riek ([email protected])
In this webinar, Claudius shows how to choose the best measurement approach (lock-in amplification vs boxcar averaging) and settings for your optical measurements to minimize the implementation effort, save time, and record high-quality data with the highest signal-to-noise ratio. The focus is on four prototypical techniques in optics and photonics: tunable diode laser absorption spectroscopy (TDLAS), pump-probe spectroscopy, stimulated Raman scattering (SRS), and carrier-envelope offset (CEO) stabilization. In this blog post, Claudius answers the questions asked during the live session by covering some crucial aspects related to the topic of his webinar.
May 14th, 2020
Jelena Trbovic ([email protected])
In this webinar, Jelena looks into the basic transport characteristics of materials and nanostructures, and discusses how to set up a lock-in amplifier to perform the fastest measurements with the highest signal-to-noise ratio. An exhaustive summary of her answers to the questions asked during the live session is available here.
April 30th, 2020
Kıvanç Esat ([email protected])
In this webinar, Kıvanç looks at the best ways to use time- and frequency-domain tools to characterize sensing devices. In particular, he shows how to set up feedback loops for sensor control without the need for time-consuming and expensive application-specific integrated circuitry (ASIC) development.
Virtual SPM User Meeting
April 16th, 2020
Brice Gautier, Romain Stomp ([email protected])
This session features a talk by Prof. Brice Gautier (INSA Lyon) and a tutorial by Dr. Romain Stomp (Zurich Instruments).
In his talk, Brice reviews the technical aspects enabling the use of PFM for domain imaging, hysteresis loops and domain engineering in the DFRT mode. He points out the most common artefacts and shows how experimental conditions influence measured properties. Brice also provides examples of ferroelectric domain control by means of an electric field or mechanical stress. Following the talk, Romain's tutorial looks into the DFRT method and feedback optimization.
April 16th, 2020
Valentin Aubriet, Mehdi Alem ([email protected])
This session features a talk by Mr. Valentin Aubriet (CEA-LETI Grenoble) and a tutorial by Dr. Mehdi Alem (Zurich Instruments).
In his talk, Valentin presents a setup for heterodyne Kelvin Probe Force Microscopy (h-KPFM) – featuring the HF2LI Lock-in Amplifier – under frequency-modulated and wavelength-dependent illumination. He then shows how to characterize silicon interfaces embedded under different types of oxides. In the tutorial following this talk, Mehdi discusses electrical pump-probe methods with arbitrary waveform generators.