Radiation Trap for Laser Radiation and Method for Producing a Radiation Trap for Laser Radiation and Use of a Radiation Trap for Laser Radiation

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This invention is a beam trap device specifically designed for absorbing high-power laser radiation, with power densities up to 750 W/mm². It is made from a copper body whose surface is oxidized to form a layer of black copper(II) oxide, which efficiently absorbs laser light and handles high thermal loads. The invention also covers an efficient manufacturing process for this beam trap by oxidizing the copper block at high temperatures in an oxygen atmosphere, and its use in safely absorbing high-power laser beams.

Use CasesContent extracted from patent full text and abstract with AI.

• Absorbing unutilized laser beams in high-power laser laboratories to prevent hazards and material damage.
• Integrating into laser processing equipment or systems to safely terminate laser beams after material processing operations.
• Incorporating into optical safety devices or shielding systems for protecting personnel from accidental laser exposure.
• Utilizing in scientific experiments requiring precise laser control, such as spectroscopy, where unused laser energy must be completely absorbed.
• Employing in industrial or medical laser systems where safe management of high-power residual beams is critical.

BenefitsContent extracted from patent full text and abstract with AI.

• High durability and resistance to damage even at very high laser power densities (up to 750 W/mm²).
• Improved safety by thoroughly absorbing and minimizing reflection of hazardous laser radiation.
• Simple and cost-effective manufacturing process using readily available copper and controlled oxidation.
• The black copper(II) oxide layer enhances absorption efficiency in the laser wavelength range of 400–1200 nm.
• Excellent thermal management due to copper's high thermal conductivity, and the option for integrated cooling to further extend operating life.
• Versatile design that can be customized in size and shape for different laser setups.
• Stable and robust oxide layer that adheres well to copper, ensuring long-term performance without delamination.

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Inventors & Applicants

Patent Abstract

The invention relates to a beam trap for laser radiation having a power density of up to 750 W/mm2 (1), which beam trap comprises at least one copper body (2), wherein the surface of the copper body has a continuous area made of oxidised copper (3), which area is formed at least in part of copper(II) oxide and is black in color, and the oxidised copper is formed by means of oxidation of the copper block. The invention also relates to a method for forming the beam trap (1) and to the use thereof.