UV Beam Expanders

Special Optics UV beam expanders use UV grade Fused Silica lenses that permit high energy transmission with low insertion loss over a usable spectral range from 248nm to 355nm.  These beam expanders have adjustable lens spacing and no focused retro-reflections.

Specifications:			Features
Wavefront Distortion	< 1/4 Wave		No Focused Retro-reflections Adjustable Lens Spacing Low Insertion Loss
Transmission	> 97%
Coating Damage Threshold	500 MW/cm2
Useable Spectral Range	0.248 - 0.355 nm

Available UV Beam Expanders

Model	Expansion Ratio	Input Aperture (mm)	Output Aperture (mm)	Dimensions O.D. x Length (mm)	Wavelength Range (microns)	Mechanical Drawing
61-25-4X-λ	4X	6.25	25.0	31.75 x 120	0.248 - 0.355
61-25-7X-λ	7X	3.50	25.0	31.75 x 134	0.248 - 0.355
61-25-10X-λ	10X	2.50	25.0	31.75 x 141	0.248 - 0.355

Please replace λ in model number with working wavelength when ordering.

UV Variable Beam Expander

Specifications:			Features
Wavefront Distortion	< 1/4 Wave		Compatible to Standard Computer Controlled Actuators Minimal Internal Focus for High Power Use Large Input and Output Apertures Replaces Several Fixed Wavelength Devices Non-Rotating Lens Elements, Eliminating Beam Wander Fused Silica Lens Elements
Transmission	> 95%
Coating Damage Threshold	100 MW/cm2
Useable Spectral Range	0.248 - 0.351 nm

Available UV Variable Beam Expanders

Model	Expansion Range	Max. Input Aperture (mm)	Max. Output Aperture (mm)	O.D. (mm)	Max. length (mm)	Mechanical Drawing	Availability
61-30-2-8X-λ	2-8X	10.0	30	37.6	167		In Stock for 325nm

Please replace λ in model number with working wavelength when ordering.