2 PhD students (m/f/d)

2 PhD students (m / f / d) at Max Born Institut softgarden

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The Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) conducts basic research in the field of nonlinear optics and ultrafast dynamics arising from the interaction of light with matter and pursues applications that emerge from this research.

It develops and uses ultrafast and ultra-intense lasers and laser-riven short-pulse light sources in a broad spectral range in combination with methods of nonlinear spectroscopy.

The spectral range includes in particular XUV radiation and soft x-rays, where experiments at in-house sources are complemented with the use of accelerator driven sources such as free electron x-ray lasers.

With its research, MBI fulfils a national mission and is an integral part of the international scientific community.

2 PhD students (m / f / d)

Part Time

Max-Born-Straße 2A, 12489 Berlin, Deutschland

Without Professional Experience

10 / 15 / 24

MBI invites applications for 2 PhD students (m / f / d) for the experimental investigation of time- and energy-resolved electron scattering (TERES) of photochemical reactions in gas-phase molecules as part of the European Research Council (ERC) Starting Grant project TERES .

Job profile :

In the last year, we have developed and utilized a state-of-the-art 95-keV ultrafast electron diffraction (UED) instrument to explore ultrafast dynamics in photoexcited condensed matter (see DOI : 0.

1063 / 4.0000256). One key achievement has been demonstrating the advantages of operating at higher repetition rates and employing direct electron detection to capture femtosecond-resolved scattering signals using only single-electron pulses without temporal compression.

In on-going work, we have the capability to compress electron pulses from the picosecond to the femtosecond regime using external radio-frequency fields.

In a new ERC-funded project as part of a Starting Grant, we aim push the boundaries of UED by incorporating the energy dimension into these measurements.

Our primary focus will be on ultrafast photochemical reactions in gas-phase molecules, with the ambitious goal of simultaneously capturing both electronic and nuclear dynamics in a single experiment, under identical conditions.

This high-risk, high-reward project has the potential to redefine our understanding of ultrafast photochemistry, and could open a completely new field in ultrafast science.

The project will involve performing UED measurements with electron pulses that exhibit no-to-low space-charge effects, enabling us to probe ultrafast nuclear dynamics with high spatio-temporal precision.

We will also be upgrading our UED instrument to integrate the energy dimension to UED studies, ultimately facilitating TERES measurements of photochemical reactions.

A state-of-the-art high repetition rate, high average power femtosecond laser system will be critical for driving these experiments.

Our efforts will be strengthened through collaborations with leading experts in quantum dynamical simulations (Prof. Todd Martinez, Prof.

Adam Kirrander), and electron beam technology (Prof. Jom Luiten, Prof. Brad Siwick). Additionally, we anticipate knowledge exchange and conducting complementary experiments at major national and international MeV UED facilities, such as the MeV-UED source at SLAC, to further explore these groundbreaking concepts.

Requirements :

We are seeking highly motivated, talented, and excellent candidates for these positions. Applicants must hold a Master’s or Diploma degree in physics, with very good knowledge in ultrafast laser physics being essential.

Prior experience in ultrafast electron diffraction, microscopy and / or working with high vacuum equipment is desirable.

Excellent verbal and written communications skills in English are required.

Offer :

All positions are available from 1 March 2025 and are initially limited to 3 years. The payment will be according to the German TVöD salary scheme for scientists in public research institutions (75% for PhD students).

MBI is an equal-opportunity employer and places particular emphasis on fostering career opportunities for women. Qualified women are therefore strongly encouraged to apply.

If equally qualified, severely handicapped persons are given preference.

MBI supports the reconcilability of family and working life and is certified by the audit workandfamily (audit berufundfamilie) as a family-friendly employer.

Please upload your application, including cover letter (specifying why you are interested in the position), curriculum vitae, certificates and description of previous professional activities electronically via the MBI online recruiting platform at https : / / mbi-berlin.

de / career . Official supervision will be given by Dr. Kasra Amini at MBI with affiliation to the physics department of Freie Universität Berlin.

The positions are open until filled.

For further information about the ERC project, please contact Dr. Kasra Amini ( [email protected]) .

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