Laser Optics for IR Wavelengths
Laser Optics for IR Wavelengths
IR wavelenghts are often used in medical lasers. Know-how is required to manufacture coatings in the mid-infrared
wavelength range (i.e., the wavelength range that meets medical
requirements). We have used ion beam sputtering (IBS) technology for this purpose with great success.
For the Highest Energy Densities
in the Laser Cavity
Kidney stones are effectively shattered using shock waves. These shock waves are being created more and more with the help of laser systems (i.e., with lasers that emit in the mid-IR range between 2 µm and 3 µm, the two absorption wavelengths of water).
Our coated laser optics can be found in the cavity of many medical laser systems. As the quality and performance of these systems continue to
increase, the components on the inside of these systems must also improve. Large pulse energies in these lasers require excellent damage thresholds of the laser optic coatings. High absorption rates of water and OH groups demand coating systems that are void of water molecules
and selected substrate materials, such as for example sapphire or
Infrasil® (Infrasil is a Trademark of Heraeus Quarzglas GmbH & Co. KG).
IBS Coatings
Low Dispersion & Stable
To produce IBS coatings, ions are accelerated in precious gas plasma at high energy toward a target. Highly-pure, dielectric material is thereby atomized and then condensed on the surface of the substrate. This
method can be controlled so exactly that the desired optical properties can be precisely achieved.
Dispersion of the layers is extremely low. The layers have a high density and a low microroughness. The absorption is barely measurable. Stable when confronted with chemicals, moisture can barely penetrate the coating.
To reproduce the coating, a computer-controlled system records the growth of the layers and regulates the coating unit fully automatically.
Damage Threshold Ten Times Higher
The graph shows the transmission curve of a sapphire output coupler for Er:YAG lasers. The coating has a reflection rate of R = 90 % on the front side and an AR coating for L = 2.94 µm on the back side. Customer measurements confirm an improved damage threshold that is ten times higher than in a conventional e-beam coating!
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Beyond Borders
LASER COMPONENTS Germany - Your competent partner for optical and optoelectronic components in Germany.
Welcome to LASER COMPONENTS Germany GmbH, your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, fiber optics, and more is worth every Euro (€/EUR). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:
Werner-von-Siemens-Str. 15
82140 Olching
Deutschland
Phone: +49 8142 2864-0
Email: info(at)
