Wavelength Photoelectric Copper Mirror Laser Processing High Reflectivity Copper Mirror

Copper mirror is a special optical element, mainly used in laser technology, its base material is copper or copper alloy. The copper mirror reflects the laser beam through its high reflectivity surface to achieve the guidance of the laser beam, focusing or changing the direction of propagation. Copper materials have unique application advantages in laser systems because of their hot topic conductivity, good mechanical properties and certain corrosion resistance.

Materials and advantages

Base material: The substrate of copper mirrors is usually made of oxygen-free copper or copper alloys, which not only have good thermal conductivity, but also can withstand high-power laser beam irradiation without damage.

Coating: In order to improve reflectivity, the surface of the copper mirror is usually coated with one or more dielectric films or metal films (such as silver, aluminum, gold, etc.). The coated copper mirror can achieve high reflectivity in a wider wavelength range, and has better durability and stability.

Advantage:

* hot topic:The hot topic conductivity of the copper material allows the copper mirror to quickly dissipate heat in a high-power laser system, keep the temperature of the mirror stable, and avoid performance degradation or damage caused by high temperature.

* High reflectivity:Through coating treatment, the laser copper mirror can achieve a reflectivity close to 100%, effectively reducing the energy loss of the laser beam during transmission.

* Corrosion resistance:The copper material itself has certain corrosion resistance, which can resist the erosion of environmental factors to a certain extent and prolong the service life of the mirror.

Copper mirrors are divided into parabolic copper mirrors and flat copper mirrors, which are different in form and function. The reflecting surface of a parabolic copper mirror is a parabolic surface, that is, a reflection device made of the shape formed by parabolic rotation, while the reflecting surface of a flat copper mirror is a plane, that is, the mirror surface is flat and has no irregularities.

Parabolic bronze mirrorDue to its geometric characteristics, it is possible to focus a parallel incident laser beam to the focal point, forming a high energy density light spot. This feature is particularly important in laser processing, laser cutting, laser welding and other applications, which can achieve accurate processing of workpieces and efficient processing. At the same time, the parabolic copper mirror can also convert the laser emitted by the point light source into a beam of light transmitted in parallel, which is widely used in laser transmission and collimation systems. In high-power laser systems, parabolic copper mirrors are commonly used in optical resonators, beam of light conversion and focusing systems. Due to its excellent focusing performance and thermal stability, the parabolic copper mirror can withstand high-power laser irradiation, ensuring the stable operation of the system.

Wavelength off-axis parabolic bronze mirror index parameters:

Diameter: 12.7mm, 25.4mm, 50.8mm optional

Clear aperture: > 90%

Reflection focal length: 15.0 mm-152.4 mm optional

Focal length tolerance: ± 1%

Reflectance: Ravg > 99%

Off-axis angle: 90 °/75 °

Surface finish: 20/10 (scratches/pitting)

Surface flatness: λ/4 (@633 nm)

Surface roughness: <100A

Flat bronze mirrorIn laser systems, it is mainly used to reflect and guide laser beams. By adjusting the angle and position of the flat copper mirror, the propagation direction of the laser beam can be changed, and the precise control and positioning of the laser beam can be achieved. In some low-power laser systems, the flat copper mirror is widely used due to its simple fabrication and low cost. These systems may include laser marking, laser ranging, laser scanning, and other applications. Under certain specific conditions, such as the need for uniform illumination of a large area or the need to adjust the polarization state of the laser beam, the flat copper mirror can also play its unique role. By combining other optical components, complex laser beam control and transformation can be achieved.

Wavelength plane bronze mirror index parameters:

Diameter: 9.525mm, 19.05mm, 25.4mm optional

Clear aperture: > 90%

Reflectance: Ravg > 99%

Incidence angle: 0 °/45 °

Surface finish: 20/10 (scratches/pitting)

Surface flatness: λ/4 (@633 nm)

Surface roughness: <100A

Application areas

1. Laser cutting and welding: Mirrors are used to control the focus and positioning of the laser beam, improving the quality and efficiency of cutting and welding.

2. Laser Ranging: The mirror reflects the emitted laser beam back to the laser, allowing the rangefinder to measure the target distance.

3. Laser printing and display: In laser printing and display technology, mirrors are used to control the scanning direction and position of the laser beam, enabling image printing and display.

4. LiDAR: Mirrors are used in LiDAR to reflect laser beams, improving radar sensitivity and measurement accuracy.

Copper mirrors are one of the key components in laser technology. Their high thermal conductivity, high reflectivity, and corrosion resistance give them broad application prospects across multiple fields.