Compare Model Drawings, CAD & Specs Major Axis Minor Axis Availability Price
BQW-1
$148
In Stock
 BQW-1 22.11 mm 12.50 mm
In Stock
 $148
BQW-2
$190
In Stock
 BQW-2 44.21 mm 25.00 mm
In Stock
 $190

Specifications

  • Material
    UV Grade Fused Silica
  • Wavelength Range
    195-2100 nm
  • Wavefront Distortion
    λ/10 @ 632.8 nm, transmitted
  • Surface Quality
    10-5 scratch-dig
  • Thickness
    2.0 mm
  • Thickness Tolerance
    ± 0.2 mm
  • Parallelism
    ≤ 10 arc seconds
  • Cleaning
    See How to Clean Optics
  • Clear Aperture
    Central 90% of diameter
  • Size Tolerance
    +0.0/-0.25 mm
  • Antireflection Coating
    Uncoated

Features

Ideal Polarizers for Laser Cavities

When oriented at Brewster's angle (55.57°), s-polarized light is partially reflected, p-polarized light is transmitted without loss. When placed inside a laser cavity Brewster windows cause p-polarized light to have higher effective gain, resulting in the laser's final output being strongly p-polarized.

UV Fused Silica for UV, Laserline & Broadband Applications

UV Grade Fused Silica is synthetic amorphous silicon dioxide of extremely high purity providing maximum transmission from 195 to 2100 nm. This non-crystalline, colorless silica glass combines a very low thermal expansion coefficient with good optical qualities, and excellent transmittance in the ultraviolet region. Transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. It will not fluoresce under UV light and is resistant to radiation. For high-energy applications, the extreme purity of fused silica eliminates microscopic defect sites that could lead to laser damage.