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2X, 2μm Vega® Broadband Beam Expander

2X, 2μm Low Power DA Beam Expander, #37-376

Stock #37-376 In Stock
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Angle of Incidence (°):
BBAR (1900-2100nm) & Laser V-Coat (1940-1950nm)
Design Wavelength DWL (nm):
Entrance Aperture (mm):
Exit Aperture (mm):
Expansion Power:
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Length (mm):
Mounting Threads:
Input: Male M30 x 1
Output: Female M27 x 0.5
Transmission (%):
>99 (nominal)
Beam Expander
Weight (g):
Housing Diameter (mm):
Transmitted Wavefront, P-V:
<λ/10 for 5.5mm input beam (nominal, λ = DWL)
Coating Specification:
Ravg <0.1% @ 1940nm - 1950nm
Ravg <0.5% @ 1900nm - 2100nm
Ravg <0.25% @ 2000nm - 2100nm
Wavelength Range (nm):
1900 - 2100
Fixed Magnification
Divergence Adjustment:
Rotating Optics

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • AR Coated for Broadband Tunable Laser Sources
  • Fixed Magnifications Available from 1.5X to 20X
  • Divergence Adjustable through Rotating Optical Design

TECHSPEC® Vega® Broadband Beam Expanders are designed for demanding tunable laser sources. These compact beam expanders are optimized at a wide range of wavelengths, with designs achieving λ/10 transmitted wavefront error and no internally focusing ghost images for compatibility with high power lasers. TECHSPEC Vega Broadband Beam Expanders are easily integrated into prototype and advanced applications while maintaining quality across the adjustment range. They are ideal for medical laser applications employing Thulium and Holmium sources.

Note: The length of these beam expanders will change upon divergence adjustment, typically by 1 to 2mm from the specified length.

TECHSPEC Vega® Laser Line Beam Expanders are also available. For more cost sensitive applications, Edmund Optics also offers TECHSPEC Scorpii® Nd:YAG Beam Expanders. For HeNe laser applications, TECHSPEC Arcturus® HeNe Beam Expanders are available. For higher precision applications where sliding optics are necessary, please see our TECHSPEC Draconis® Nd:YAG Laser Line Beam Expanders or TECHSPEC Draconis® Broadband Beam Expanders. For broadband or ultrafast applications, TECHSPEC Canopus® Reflective Beam Expanders are available.

To learn more about the difference between the 2µm and 2µm low OH- content beam expanders, along with the different types of fused silica, review our UV vs. IR Grade Fused Silica application note.

Fixed Laser Beam Expanders