Description

 A beam expander is a two or more element optical system that changes the beams size and divergence characteristics. Beam expanders have numerous uses. By expanding a beam prior to focusing, smaller focal spot sizes can be achieved. Beam expanders improve a beams collimation. They are also used to reduce the beam diameter which may be useful when using acousto- or electro-optic modulators. Using a spatial filter with a beam expander can make an asymmetrical beam profile more symmetric and provide more uniform energy distribution.
Specification:
1. Wavelength: 1.*6um;*0.6um
2. Expansion:2x  3x  4x  5x  6x (Customizing available)  
3. Material: import znse for CO2 beam expander:
optical grade glass for YAG beam expander