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Our Holographic Notch and SuperNotch® Filters are fabricated
by recording interference patterns formed between two mutually
coherent laser beams, unlike conventional interference filters,
which are made by vacuum evaporation techniques. Since all
layers are recorded simultaneously within a thick stack, the
optical density of the notch filter is high and its spectral
bandwidth can be extremely narrow. Also, since the layering
profile is sinusoidal instead of squarewave, holographic notch
filters are free from extraneous reflection bands and provide
significantly higher laser damage thresholds.
Optical
Specifications
|
Notch |
Notch-Plus™ |
SuperNotch® |
SuperNotch-Plus™ |
Laser Attenuation
Optical
Density
(Averaged over entire clear aperture) |
>4.0
|
>6.0 |
>4.0
|
>6.0 |
| Spectral
Bandwidth
Wavenumbers between O.D.
0.3 or 50% transmission points
|
<700 cm-1 |
<700 cm-1 |
<350 cm-1 |
<350
cm-1 |
| Spectral Edgewidth
Wavenumbers between
O.D. 0.3 and 4.0 points |
<300 cm-1 |
<300 cm-1 |
<150 cm-1 |
<150
cm-1 |
Available
Wavelength Range |
350-1400 nm |
350-1400 nm |
488-1400 nm |
488-1400
nm |
*Contact Kaiser for specs outside the listed range.
| Physical Specifications |
All Products |
| Environmental Stability |
No detectable performance change after cycled between
-50ºC to +80ºC and returned to room temperature. |
| Wavelength Range |
Standard Wavelengths (nm):
441.6, 457.9, 476.5, 488, 514.4, 532, 568.2, 632.8, 647.1, 752.5, 785, 1064
Custom Wavelengths:
In the available wavelength range specified in the preceding
table. |
| Sizes |
Standard Diameters: 1.0, 1.5, 2.0, 2.5 inches
Standard Thicknesses: 0.23 inches nominal |
| Filter Clear Aperture |
Active Filter Diameter: External diameter less 0.375
inches |
| AR |
Specific wavelength range AR coating are available on request. |
| Wavelength Range |
Standard Material: Glass
Optional Material: Fused Silica
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| Warranty |
3 Year |
Custom Products
Kaiser manufactures all of its filter products at our Ann Arbor facility. Contact Kaiser to talk with an engineer for filter specifications outside the listed ranges.
Request
product information online | Filter sales contact info
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