Tunable ultrafast extreme ultraviolet source for time- and angle-resolved photoemission spectroscopy

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3460267· OSTI ID:22053775

Dakovski, G L; Rodriguez, G ^[1]; Li, Y; Durakiewicz, T ^[2]

---

1. MPA-CINT, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. MPA-CMMS, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We present a laser-based apparatus suitable for visible pump/extreme UV (XUV) probe time-, energy-, and angle-resolved photoemission spectroscopy utilizing high-harmonic generation from a noble gas. Tunability in a wide range of energies (currently 20-36 eV) is achieved by using a time-delay compensated monochromator, which also preserves the ultrashort duration of the XUV pulses. Using an amplified laser system at 10 kHz repetition rate, approximately 10{sup 9}-10{sup 10} photons/s per harmonic are made available for photoelectron spectroscopy. Parallel energy and momentum detection is carried out in a hemispherical electron analyzer coupled with an imaging detector. First applications demonstrate the capabilities of the instrument to easily select the probe wavelength of choice, to obtain angle-resolved photoemission maps (GaAs and URu{sub 2}Si{sub 2}), and to trace ultrafast electron dynamics in an optically excited semiconductor (Ge).

• OSTI ID: 22053775
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 7; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DETECTION
ELECTRONS
ENERGY RESOLUTION
EV RANGE 01-10
EXTREME ULTRAVIOLET RADIATION
GALLIUM ARSENIDES
HARMONIC GENERATION
KHZ RANGE
LASERS
MONOCHROMATORS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PULSES
PUMPING
RARE GASES
SEMICONDUCTOR MATERIALS
SPATIAL RESOLUTION
TIME RESOLUTION
WAVELENGTHS