SubsidieMeestersUltrafast Cathodoluminescence Spectroscopy with Coherent Electron-Driven Photon Sources
The project aims to develop a low-cost electron-probe technique for visualizing nano-optical excitations and decoherence dynamics at nanometer and femtosecond resolutions in various materials.
Projectdetails
Introduction
Exploring the optical responses of materials at the nanoscale is central to various fields of study, including quantum-sensitive measurement metrologies, photovoltaics, and optoelectronic devices. Electron probes have established themselves as important tools for visualizing nano-optical excitations with unprecedented spatial resolution.
Challenges in Visualization
However, controlling optical excitations and exploring their decoherence dynamics require visualizing the dynamics of the nano-world at sub-femtosecond temporal resolutions.
Project Overview
Within the context of our ERC Starting Grant "NanoBeam," we have established and proposed an electron-probe technique that not only allows us to explore dynamics at nanometer spatial and femtosecond temporal resolutions but also does so at a low cost.
Methodology
Unlike state-of-the-art ultrafast electron microscopy, our method does not rely on external laser excitations but rather on internal electron-driven photon sources.
Application Areas
To visualize the decoherence dynamics in a variety of systems, we plan to merge the electron-driven photon sources with a cathodoluminescence spectroscopy setup based on optical fiber technology. The systems we aim to explore include:
- Quantum emitters and networks
- Optical excitations of two-dimensional materials
- Semiconducting optoelectronic devices
Design and Implementation
We will design piezo stages and sample holders that enable precise alignment and tuning of the sample, electron-driven photon sources, and fibers inside the microscope while efficiently collecting cathodoluminescence photons.
Photon Yield and Investigation
Our electron-driven photon sources are designed to facilitate a high photon yield, allowing for optimal investigation of nonlinear processes.
Testing and Verification
The instrument will be tested and verified for applications in mapping the decoherence dynamics of:
- Quantum emitters coupled to photonic structures
- Optical excitations in two-dimensional materials
- Charge transfer dynamics in photovoltaic devices
Financiële details & Tijdlijn
Financiële details
| Subsidiebedrag | € 150.000 |
| Totale projectbegroting | € 150.000 |
Tijdlijn
| Startdatum | 1-2-2024 |
| Einddatum | 31-7-2025 |
| Subsidiejaar | 2024 |
Partners & Locaties
Projectpartners
- CHRISTIAN-ALBRECHTS-UNIVERSITAET ZU KIELpenvoerder
Land(en)
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