Co2 Laser Beam Expanders

We offer a variety of Laser Beam Expanders to suit most laser types, from small waveguide lasers up to multi-kilowatt industrial lasers. There is also a modular range for experimental and laboratory purposes.

The most common type of Beam Expander is derived from the Galilean telescope which usually has one negative input lens and one positive output lens. The input lens presents a virtual beam focus at the output. For low expansion ratios (1.3-20 times) the Galilean telescope is most often employed due to its simplicity, small package size and low cost.

Part number description: BEX-xxx-yy-z-M-T-AA

 
BEX --- BEX series Beam Expanders
xxxx------- laser wavelength: 10.6 means 10.6um, 532 means 532nm, 633 means 633nm.
yy -------- expansion ratio in times
Z -------- lens material: Z means ZnSe; G means GaAs, none means optical glass.
L ---------- beam expander shaper, L means trumpet-shape, none means cylinder shape.
M --------- connection: M means screw connection; none means cylinder connection.
T ---------- type: T means adjustable beam expander; none means fixed beam expander.
AA -------- special purpose.
Example: BEX-10.6-3GM: 10.6um fixed beam expander, 3x, GaAs material, cylinder, screw connection.
BEX-10.6-3.5Z: 10.6um fixed beam expander, 3.5x, ZnSe material, cylinder.

For Co2 Laser Beam Expander, There are 2 types of beam expander: fixed and adjustable beam expanders. For the fixed beam expanders, the spacing between the two lenses inside the beam expander is fixed, but the spacing between the two lenses inside the adjustable beam expanders is adjustable. The lens material is ZeSe, which allows the red light to go through the beam expander.