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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., 800nm T, 400nm R 45° Ti:sapphire Ultrafast Harmonic Separator

Ultrafast Harmonic Separators

Ultrafast Harmonic Separators

Stock #12-661 3-4 days
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Angle of Incidence (°):
Clear Aperture (%):
Clear Aperture CA (mm):
Coating Specification:
Surface 1: Ravg >99% @ 376 - 425nm Tavg >98% @ 700 - 900nm
Surface 2: Ravg <1% @ 700 - 900nm
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):
3.00 ±0.10
Transmission Wavelength (nm):
Harmonic Beamsplitter
GDD Specification:
Surface 1: 0±20fs2 @ 376 - 425nm

Regulatory Compliance

RoHS 2015:
Reach 205:
Certificate of Conformance:

Product Family Description

  • Separates Ultrafast Harmonic Wavelengths
  • Ultrafast Beamsplitter Coating with Low GDD
  • <λ/10 Wavefront Distortion
  • Designs for Ti:sapphire and Yb:doped Femtosecond Lasers

TECHSPEC® Ultrafast Harmonic Separators, also known as Ultrafast Harmonic Beamsplitters, are used to reflect the second or third harmonic of femtosecond lasers while transmitting the fundamental pulse. The reflective surface is designed to have high reflectivity and a low Group Delay Dispersion (GDD) of ±20fs2 to minimize pulse dispersion. The back surface is coated with an anti-reflection coating to enhance the transmission of the fundamental light. TECHSPEC Ultrafast Harmonic Separators provide low wavefront distortion and feature high quality, thin UV fused silica substrates with 10-5 surface quality. Designs for separating the harmonics of 800nm and 1030nm (Ti:sapphire and Yb:doped fiber) lasers are available.

Please contact us if your application requires an Ultrafast Harmonic Separator designed for custom wavelengths.