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Hellma Holmium Oxide Glass Filter - 666-F1 - 666-000F1-339

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The light yellow filter marked F1 is a glass doped with holmium oxide (Ho2O3). The chemical element holmium shows a series of small absorption peaks in UV and Vis range.

 

Holmium Oxide Glass Filter

 


Description Holmium oxide glass filter, solid filter, certified
Use Assessment of wavelength accuracy in both the UV and visible range (279 nm to 638 nm) with a spectral bandwidth up to 2 nm
Material Glass doped with holmium oxide
 
Typical spectrum of a holmium oxide glass filter
 

Because the exact positions of the holmium peaks vary slightly for each production batch (movement due to the glass matrix), the filters are calibrated individually.

 

 

Type Material Thickness Absorbance at nm
666-F1 Holmium Oxide Glass 2,1 mm 279, 361, 454, 536, 638

  • Model: 666-000F1-339
  • Manufactured by: Hellma

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