Bachelor/Master Thesis (f/m/d): Non-linear interferometry and phase measurement in HHG from solids

Femtosecond laser pulses in the mid-infrared have a number of emerging applications in strong-field science, including the generation of high-order harmonics (i.e. multiples) of the original laser frequency. We have recently demonstrated that this allows measuring the carrier-envelope phase.

This project aims at developing an optical setup for phase measurements in the mid-IR, based on high-harmonic generation. Spectra of harmonics (discrete peaks in (a)) will be recorded with a fast spectrometer. The interferences of adjacent harmonics gives rise to zig-zag pattern in (b), and allows us to measure the absolute phase of the carrier-envelope phase of the laser pulses. Using phase-resolved measurements, we will explore ultrafast electron dynamics in nanoscale solids.

You will:

• Learn how to operate a femtosecond infrared laser system.
• Work in a state-of-the-art laser lab at the frontier of generation of high-order harmonics from solids.
• Learn how to measure optical spectra, and analyze your data.

We offer exciting Bachelor/Master Theses at a junction of optics and solid-state-physics in an excellent research environment. Internships and Student Assistent (HiWi) projects are also available.

We seek:

• Highly motivated students with an aptitude for research
• Basic programming skills are expected.
• A high degree of initiative and independence is beneficial.
• A background in optics is beneficial.

Interested candidates please contact us