The Scienta Omicron VUV5k is a well-established high intensity narrow bandwidth UV source for excellent and efficient UPS and ARPES measurements. The unique UV monochromator and the source are optimised to utilise the full wavelength range of the He plasma, yielding monochromatic light with extremely high intensity at the sample. To enable continuous and long experiments the VUV5k has excellent stability and requires only minimal maintenance.
Efficient UPS and ARPES measurements rely not only on the electron analyser but also on a high quality excitation source. The Scienta Omicron VUV5k package provides high intensity He I (21 eV and 23 eV) and He II (41 eV) light with narrow bandwidth. This is achieved with the ECR based VUV5000 source delivering a flux density per unit wavelength interval comparable to that obtained from the best undulator beam lines. The photon flux emitted through a 2 mm aperture is about 500 times higher than that from conventional discharge VUV sources.
The included UV monochromator concept is optimised for He I and He II wavelengths. The grating monochromator is easily adjusted to the desired wavelength of the source spectral range and allows for complete separation of He Iα and He Iß while maintaining a 1 meV bandwidth. The integrated differential pumping scheme, with entrance and exit capillaries, allows to operate the VUV5k with pressures as low as 10-11 mbar in the analysis chamber. Together, these components form the most intense narrow line width He-light source on the market.
The excellent stability, easy operation, and low operating pressure of the VUV5k make it ideal for experiments on materials, including ultrathin films and nanomaterials, which require extremely high intensity and long measurement times. In addition, the 1 meV bandwidth allows high resolution gas phase and cluster measurements.
The VUV5k standard package is the combination of the VUV5000 UV-source and the VUV5046 UV-monochromator. This package comes with a set of interchangeable output capillaries of different diameters which are operated at a fixed working distance, typically 10 mm. The monochromator focuses the photons on the capillary entrance through which they are guided to the sample.
The VUV5k-set for ARPES is the best performing UV source for high resolution ARPES work. This package contains the VUV5000 UV-source, the VUV5047 UV-monochromator with retractable exit stage, and the ARPES capillary. The retractable exit stage allows to move the fragile ARPES capillary away from the sample when not in use, protecting the capillary from damage, and reducing geometric constraints in the analysis chamber. The ARPES capillary itself is optimised for high resolution ARPES and combines highest flux density with small spot size.
584 Å / 21 eV (FWHM ≈ 1 meV)
537 Å / 23 eV (FWHM ≈ 1 meV)
304 Å / 41 eV (FWHM ≈ 2 meV)
NW 35 CF
For full specifications and more information about product options, please do not hesitate to contact your local sales representative.
A Time- and Angle-Resolved Photoemission Spectroscopy with Probe Photon Energy up to 6.7 eV
We present the development of a time- and angle-resolved photoemission spectroscopy based on a Yb-based femtosecond laser and a hemispherical electron analyzer. The energy of the pump photon is tunable between 1.4 and 1.9 eV, and...
Materials Innovation Platform (MIP) with EVO-50 MBE, ARPES and LT Nanoprobe
The 2DCC-MIP is focused on advancing the synthesis of 2D materials within the context of a national user facility. The 2DCC is developing custom deposition tools with in-situ and real time characterisation and facilities for bulk growth of chalcogenide single crystals. Unique capabilities are also available to simulate growth kinetics through first principles and a reactive potential approach.more
Materials Innovation Platform (MIP) with MBE, NanoScan Lab, VT AFM and ARPES Lab
Research focuses on Magnetic Films and Spintronics, including antiferromagnet spintronics and multi-field control of magnetism.more
ARPES Lab with Lab10 MBE
Research focus on spintronics, quantum transport theory of graphene and mesoscopic nanosystems, and theoretical research on the topological effect and phase transition of condensed state systems.more
Materials Innovation Platform (MIP) for Epitaxial Quantum Materials
Research focus on controlled synthesis of epitaxial thin films and nanostructures, including: ferroelectrics, strongly correlated oxides, multiferroics, superconductors, thermoelectrics, photovoltaics, oxide catalysts, electronic/ionic conductors, and the characterisation of their functional properties.more
ARPES Lab with Integrated Preparation Chamber
Research focuses on carbon-based composite functional materials, new energy storage materials and devices, and the preparation and modification of marine functional materials.more
The retractable VUV5k-package is the combination of the VUV5000 UV-source and the VUV5047 UV-monochromator. These components form a unique light source. The package allows a working pressure in the 10-11 mbar range during lamp operation.