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Dual-band Mirrors for CO2 Lasers and Pilot Lasers
High Reflection Efficiency
Pilot lasers are used in systems with invisible CO2 processing lasers to determine the beam's point of impact. The beam guidance of both lasers is the same, which leads to problems: If the beam-guiding components are not optimized for the wavelengths used, they "swallow" light. In silicon mirrors, the light of the pilot laser was almost not visible anymore.
At an angle of incidence (AOI) of 45°, the following values can be achieved R > 99.8% (CO2 laser) and R > 90.0% for the pilot laser (600-700 nm). The low phase shift of approximately ±2° is also noteworthy.
In addition to silicon mirrors, copper mirrors are also used for light of the wavelength 10.6 μm. However, silicon substrates have major advantages: Unlike pure metal mirrors, they are significantly lighter. Furthermore, silicon mirrors are free of thorium and have a surface resistance that does not scratch as quickly during cleaning.
More Information http://www.lasercomponents.com/lc/optics/laser-optics/coated-laser-optics/
JSOL - Journées Sécurité Optique et Laser 2017, March 28-29, Bordeaux, France
Automate 2017, April 3-6, 2017, Chicago, IL, USA, Booth 2661
DCS 2017, April 11-13, 2017, Anaheim, CA, USA, Booth 628
Breko 2017, April 25-26, 2017, Messe Frankfurt, Booth 53
Optics & Photonics Days 2017, May 29-31, 2017, Oulu, Finland
ANGACOM, May 30 - June 01, 2017, Cologne, Germany, Booth 7-B09
Sensor+Test, May 30 - June 01, 2017, Nürnberg, Germany, Booth 1-256
Photonex Scotland Roadshow, June 14, 2017, University of Strathclyde, UK, Booth S2
LASER World of Photonics, June 26-29 2017, Messe Munich, Booth B3.303
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