1. Wavelength: The optical materials and coatings of the beam expanders are usually optimized for specific wavelengths. Therefore, it is necessary to select the appropriate beam expander based on your laser wavelength. For example, for a 1064 nm laser, a beam expander specifically designed for that wavelength should be chosen.
2. Magnification: Determine the required magnification based on your application requirements. The magnification of the beam expander determines the degree of expansion or reduction of the beam diameter. Common magnifications include 2X, 3X, 5X, etc. You need to select the appropriate magnification according to your actual needs.
3. Beam Diameter: Take into account the diameter requirements for both the input and output beams. The input beam diameter of the beam expander should match that of your laser output beam, while the output beam diameter is determined based on the magnification ratio and application needs.
4. Diffraction Angle: The beam expander can modify the divergence angle of the laser beam. Therefore, you need to select an appropriate diffraction angle based on your application requirements for the beam's collimation degree. A smaller diffraction angle implies better collimation performance and is suitable for applications involving long-distance transmission.
5.Optical Quality: Select a beam expander with high optical quality to ensure the beam's transmission characteristics and energy distribution meet your application requirements. A high-quality beam expander should have low wavefront distortion, high transmittance, and good energy distribution uniformity.
6. Installation Method: Consider whether the installation method of the beam expander is compatible with your optical system. Common installation methods include threaded connection, etc. You need to select the appropriate installation method based on the actual design of your optical system.
Special Requirements: If you have specific application requirements, such as the need for manual or electrical zoom functions, or special requirements for the size, weight, or other aspects of the beam expander, please contact us for customization.
