Lasers

Tender description

The school of physics and astronomy seeks tender submissions for a high repetition rate vacuum ultraviolet (VUV) laser source to be used as an excitation source for performing very high-resolution angle-resolved photo-emission spectroscopy. The school of physics and astronomy seeks tender submissions for a high repetition rate vacuum ultraviolet (VUV) laser source to be used as an excitation source for performing very high-resolution angle-resolved photo-emission spectroscopy. The system should fulfill or exceed the following requirements: 1) Laser system: — wavelength <115 nm (all following specifications refer to the final output (<115 nm) beam unless otherwise specified), — high repetition rate (50 MHz or above), — pulse duration: 10-20 ps, — pulse Bandwidth: <0,1 meV, — average power output of VUV beam > 10 W, — ability to controllably attenuate the power of the output beam between 0 and 100 % of the maximum flux, — full remote control of polarization of the output beam (linear horizontal and vertical as well as circular polarization), — simple user operation of the system, — all required frequency conversion stages, electronics, power supplies, controllers, cables, hardware cards, interlock connections, chiller units, etc. to enable stable and safe operation of the complete system should be included. Maximum cable lengths should be indicated, — size of the complete system and any supporting peripheral components should be indicated, — documentation of the hardware (and any software) should be provided and should be sufficient to enable users to operate the instrument and to understand the key points of its performance. 2) Focusing option: This item should be included as an optional add-on, with costs for the package clearly identifiable. — beam focusing package, including an in vacuum lens with focal length 55 mm and an OD of 18 mm (clear aperture 15 mm), with a design goal for a <2 micron beam diameter at the sample, — focus target for making in situ beam size measurements, — system for holding and manipulation of the lens in vacuum does not need to be included as part of the tender. 3) Accessories: This item should be included as an optional add-on, with costs for the package clearly identifiable. — beam detection/visualisation package, including solid state detector suitable for use with the output photon energy, phosphor screen and phosphor target, — in-line filters for use with suitable purge gas for operation of the system, — double-sided CF40 UHV flange with LiF2 window, with a clear aperture of at least 18 mm. (Clear aperture should be specified.). 4) System level: — compatible with European electricity (230V +10%/-6 % /50Hz and CE conformity; in the UK 240 V is most common), — conformity to EU regulations, — please specify minimum laboratory space required for full installation (equipment and electronics), and any laboratory services (e.g. power requirements, gas requirements, etc.) or environment (e.g. temperature or mechanical stability) required, — system must be fully assembled and demonstrated working as a complete unit, — any necessary laboratory services (e.g. chiller for water cooling, gas manifolds, etc.) required for operation of the system that are not included in the tender reply should be specified in detail, — suitable factory and site acceptance tests should be performed in order to demonstrate that the specifications detailed above are met. Please detail the protocols that will be followed for these, — costs and timescales for delivery, installation, and commissioning should be included. Warranty and support Tender submissions must detail company support and servicing, including: — direct service and application support, — technical support, — any software updates provided free of charge over entire product lifetime, — on-site installation and training, — warranty package.