Lasers

Tender description

Continuous Wave Deep UV laser for use in the School of Physics and Astronomy at the University of St Andrews. A continuous wave laser source to be used as an excitation source for performing very high-resolution angle-resolved photoemission spectroscopy. The tender submissions should include all components necessary to ensure delivery of a stable narrow-bandwith deep UV light source. The system should fulfill or exceed the following requirements: (1) Laser system: — true continuous wave operation, — simple operation of the system, — wavelength <185 nm (all following specifications refer to <185 nm beam unless otherwise specified), — power output of deep UV (<185 nm) beam > 0.5 mW, — RMS amplitude noise of frequency converted light: <10 %, — residual infrared in output beam: <10 %, — linewidth < 15 GHz, — linear polarization > 50:1, — beam shape quality M2 better than 1.5 in both horizontal and vertical directions, — long term frequency drift with room temperature change: <6 GHz/K, — all required frequency conversion stages, electronics, power supplies, controllers, cables, hardware cards, etc. to enable stable 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) Optics option: This item should be included as an optional add-on, with costs for the package clearly identifiable. — beam steering and focusing package, including suitable optics and holders for steering the 183 nm laser beam into an apparatus for angle-resolved photoemission spectroscopy, and for focusing the beam to a spot of <5 microns diameter from a working distance of the final optical element of ~300 mm, — neutral density filter wheel to provide efficient photon flux control. (3) System level: — compatible with European electricity (230 V +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 required (e.g. power requirements, gas requirements etc.), — 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.