Ultrafast laser-plasma interactions in air at high laser repetition rates >> 100 kHz

Project Description:

This project focuses on investigating ultrafast laser-plasma interactions in air at high laser repetition rates exceeding 100 kHz. Using high-power ultrafast laser systems, plasma filaments will be generated and characterized in gases. The project combines experimental work with numerical simulations and includes the development of new diagnostic methods for plasma characterization.

Task List:

• Experimental Setup and Implementation:
• Implementation and calibration of plasma diagnostic methods:
• Numerical Modeling and Simulation:
• Collaborations and Partnerships:
• Data Analysis and Documentation:

Full description

High average power few-cycle THz technology and applications

Project Description:

This project aims to develop efficient broadband single-cycle Terahertz sources with high average powers and repetition rates for advanced imaging applications. The focus lies on developing nonlinear conversion setups based on optical rectification suitable for high average powers, as well as the realization of imaging concepts and implementation of advanced THz detection concepts.

Task List:

• Development of THz Sources
• Theoretical Modeling and Simulation
• Development of Detection Methods
• THz Imaging Applications
• Collaborations and Technology Transfer

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Application of ultrafast laser-driven plasma generation

General Topic: Application of ultrafast laser-driven plasma generation

Supervisor: Dr. Malte Schröder
Starting Date: To be discussed with supervisor

List of tasks:

• Assisting with currently running experimental campaigns using a high-power ultrafast laser system (500W). Focus on laser-plasma interaction, laser filamentation application, or THz generation/detection.
• Constructing small-scale experiments/diagnostic setups for larger projects.
• Evaluation of experimental data.

Candidates with a background in laser or plasma physics are preferred.

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Nonlinear self-compression of 2-µm ultrafast laser

General topic: Nonlinear self-compression of 2-μm ultrafast laser

Supervisor: Dr. Anna Ono
Starting date: to be discussed with supervisor

List of tasks:

• Simulating pulse compression in fiber with different parameters including input power/duration, fiber length/core size to give an instructive
• Building and optimizing the fiber-compression stage to achieve sub-10 optical cycle pulses with high overall efficiency
• Adapting current 1-µm FROG setup to 2-µm wavelength range and characterize the compressed pulse
• Further extension can be discussed depends on progress

Full description

You're a RUB student and interested in a HiWi position? Feel free to contact us with an application to: puls-office@rub.de

We are also offering several master thesis topics.