Product category:
Testing, analysing and monitoring equipment
News Release from: Precision-Optical Engineering | Subject: Beam monitor BM10.6
Edited by the Engineeringtalk Editorial
Team on 12 July 2001
Novel system for monitoring high power
CO2 lasers
Precision-Optical Engineering has designed a novel laser beam sampling system to specifically solve the problem of non-invasive monitoring of high power CO2 lasers in materials processing applications
High power lasers are used in a variety of industrial process, such as welding Monitoring parameters associated either with the laser beam itself or with the process is fundamental in optimising the operating conditions Using its expertise in diamond machining, Precision-Optical Engineering has designed a novel laser beam sampling system, the beam monitor BM10.6, in order to specifically solve the problem of non-invasive monitoring of high power CO2 lasers in materials processing applications
This article was originally published on Engineeringtalk on 25 Sep 2001 at 8.00am (UK)
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The water cooled BM10.6, is based on the use of single point diamond turning to produce a very weak diffraction grating on an OFHC copper substrate (usually a fold mirror).
The proportion of the beam sampled, and even the angle of the outcoupled sample can be varied to allow for customising to particular optical systems.
Typical sampling is of the order of 0.0005 of the input beam.
An appropriate detector can be used to give a measure of the power in the main laser beam.
The use of this sampling system, however, does not affect the primary function of the beam and can be used continuously for beams up to 10 kW power.
The customised monitor requires no internal adjustments and features a safety interlock.
This can be used to shut the laser down if the power exceeds threshold limits.
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