A high-order harmonic generation apparatus for time- and angle-resolved photoelectron spectroscopy

Journal Article · Mon Jul 15 04:00:00 EDT 2013 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4812992· OSTI ID:22220564

Frietsch, B.; Gahl, C.; Teichmann, M.; Weinelt, M. ^[1]; Carley, R. ^[1]; Döbrich, K. ^[2]; Schwarzkopf, O.; Wernet, Ph. ^[3]

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1. Freie Universität Berlin, Arnimallee 14, 14195 Berlin (Germany)
2. Max-Born-Institut, Max-Born-Str. 2a, 12489 Berlin (Germany)
3. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, 12489 Berlin (Germany)

We present a table top setup for time- and angle-resolved photoelectron spectroscopy to investigate band structure dynamics of correlated materials driven far from equilibrium by femtosecond laser pulse excitation. With the electron-phonon equilibration time being in the order of 1–2 ps it is necessary to achieve sub-picosecond time resolution. Few techniques provide both the necessary time and energy resolution to map non-equilibrium states of the band structure. Laser-driven high-order harmonic generation is such a technique. In our experiment, a grating monochromator delivers tunable photon energies up to 40 eV. A photon energy bandwidth of 150 meV and a pulse duration of 100 fs FWHM allow us to cover the k-space necessary to map valence bands at different k{sub z} and detect outer core states.

• OSTI ID: 22220564
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 84; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRONS
ENERGY RESOLUTION
EQUILIBRIUM
EQUIPMENT
EV RANGE
EXCITATION
HARMONIC GENERATION
MEV RANGE
MONOCHROMATORS
PHOTOELECTRON SPECTROSCOPY
PHOTONS
TIME RESOLUTION