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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25.4mm Dia., 532nm T, 1064nm R 45° Harmonic Separator

TECHSPEC Nd:YAG Harmonic Separators

Stock #37-698 3-4 days
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Angle of Incidence (°):
Clear Aperture (%):
Coating Specification:
Surface 1: Rabs: >99% @ 1064nm, Tabs: >95% @ 532nm
Surface 2: Rabs: <0.5% @ 532nm
Diameter (mm):
25.40 +0.00/-0.10
Parallelism (arcmin):
Reflection Wavelength (nm):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Surface Flatness (P-V):
Surface Quality:
Thickness (mm):
6.35 ±0.20
Transmission Wavelength (nm):
Harmonic Beamsplitter
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
Surface 1:
7.5 J/cm2 @ 1064nm, 20ns, 20Hz
7.5 J/cm2 @ 532nm, 20ns, 20Hz
Surface 2:
10 J/cm2 @ 532nm, 20ns, 20Hz

Regulatory Compliance

RoHS 2015:
Reach 209:
Certificate of Conformance:

Product Family Description

  • Used to Separate Nd:YAG Harmonic Wavelengths
  • Beamsplitter Coating Features >95% Transmission
  • λ/10 Fused Silica Substrate

TECHSPEC® Nd:YAG Harmonic Separators are used to separate the common harmonic wavelengths of an Nd:YAG laser. A beamsplitter coating on the first surface reflects at least one wavelength and transmits another. The second surface of the beamsplitter features an anti-reflective coating to minimize the loss due to reflection. TECHSPEC Nd:YAG Harmonic Separators are available in 45° and 0° angle of incidence options. These harmonic separators are available in multiple wavelength configurations for optimal flexibility in system design.

Note: The Damage Threshold values we publish for this family of products were all tested independently from one another. When using these products with more than 1 incident beam, the resulting Damage Threshold of the system will be negatively impacted.