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Beam Splitter with Balanced Dispersion


Femtosecond laser pulses with spectral widths approaching one octave and beyond, require specialised optical components to avoid the accumulation of phase distortions that cannot be pre-compensated for.

An all-dielectric ultrabroadband beamsplitters with constant splitting ratio and balanced dispersion in transmission and reflection. The dispersion in reflection upon the dielectric coating is designed to be identical to 0.7mm of fused silica in a way that the dispersion in transmission is the same as in reflection.


  • Ultrabroad beamsplitters with balanced dispersion
  • Split ratio: 50% +/- 5% (Identical group delay)
  • Wavelength range: 600 nm-1500 nm
  • Substrate: Fused Silica, UV-grade, 10-5
  • Diameter: 1" (25.4 mm)
  • Thickness: 0.7 mm


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