Objective
Multiple wavelength interferometry is a technique used in mechanical metrology laboratories throughout the world for the absolute measurement of length of gauge blocks and length bars.
Current instruments use cadmium and mercury gas discharge lamps to provide the measurement wavelengths. They present the disadvantage however of low intensity which limits the performance of this kind of calibration both in terms of speed and maximum length capability.
The objective of the project is to develop a compact laser source, based on available He Ne lasers, stabilized at 543 nm and possibly at 594 or 612 nm.
RESULTS
The project studied the stabilization of newly available green and yellow helium-neon lasers. The stabilization was tested on lasers from three manufacturers.
In each case, the adjustment must be slightly different and the lasers must be calibrated individually. The results are nevertheless very satisfactory as in the worst case observed, there is a drift of only 3 1E8 for 1000 hours operation.
The stabilized two-colour laser is already used by the firm TESA on an equipment designed for the automatic calibration of gauge blocks in metrology laboratories.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences inorganic chemistry transition metals
- natural sciences physical sciences optics laser physics
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Data not available
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
TW11 0LW Teddington
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.