BEHP-5-355 Beam Expander

[Features]
· A laser beam expander that supports high-power lasers.
· Collimation can be finely adjusted with the diopter correction function.
· With a lens design that takes into account wave-front aberration, it can be used in high-accuracy optical systems such as interferometers and laser machining.
· The optical system of the beam expander has an air gap structure that does not use adhesives to bond lenses.
· By turning the diopter ring located at the center of the beam expander, switching between the collimated beam and divergent beam from the focused beam is possible.
· Used when strict collimating adjustment is required, or the position of the beam waist is varied.
· Laser beam expander holders (BE-M22H, BE-M34H) with finely adjustable gates for fixing beam expanders are available.
· * Beam expanders cannot be used in the reverse direction to function as beam diameter condensers for creating collimated light.
· * Calculate the divergence angle of the laser beam and the position of the beam waist, and use an appropriate optical system accordingly.
[Product Specifications]
· [ Common Specifications]
· Lens Material: Synthetic Quartz
· Lens Configuration: 2 Groups, 4 pcs (Galilean Type)
· Viewing Angle: 2° (all angles)
· Coating: Anti-reflective Film (Designed Wavelength and 633 nm)
· Telescopic Amount of Lens Barrel Length: ±5 mm
· [Individual Specifications]
· Design Wavelength: 355 nm
· Beam magnification: 5x
· Incidence Effective Diameter: φ6 mm
· Laser Yield Strength*: 4 J/cm2
· * Laser Pulse Width 10 ns, Repetition Frequency 20 Hz