5X, Coherent® CO2 Beam Expander

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CO<sub>2</sub> Beam Expanders

CO2 Beam Expanders

Stock #11-365 3-4 days
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Qty 1-4
Qty 5+
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Angle of Incidence (°):
High-Efficiency Anti-Reflective Coating (10.6μm)
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
Zinc Selenide (ZnSe)
Length (mm):
Mounting Threads:
Input: Male M25 x 1
Transmission (%):
Beam Expander
Weight (g):
Housing Diameter (mm):
Coating Specification:
Rabs <0.2% @ 10.6μm
Wavelength Range (nm):
10400 - 10600
Fixed Magnification
Divergence Adjustment:
Rotating Optics

Regulatory Compliance

RoHS 2015:
Reach 224:
Certificate of Conformance:

Product Family Description

  • Designed for CO2 Laser Sources at 10.6μm
  • Compact Housing for Easy System Integration
  • Coherent® Infrared ZnSe Optical Elements

Coherent® CO2 Beam Expanders are designed to collimate and improve the energy distribution of high power CO2 laser beams. Featuring premier grade Zinc Selenide (ZnSe) optical elements from Coherent®, these beam expanders provide minimum beam deviation and greater than 99.4% transmission at 10.6μm. A high-efficiency anti-reflective coating on the ZnSe substrates results in reflectance less than 0.2% per surface and absorbance less than 0.1% per surface at 10.6μm. Coherent® CO2 Beam Expanders feature a compact housing design with M25 input threading for easy integration into CO2 laser systems. For additional expansion power options, please contact us.

Note: II-VI Incorporated is now Coherent Corp.