Compare Model Drawings, CAD & Specs Diameter Antireflection Coating Material Surface Quality Angle of Incidence Availability Price
$107
In Stock
25.4 mm 440-700 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$118
In Stock
25.4 mm 660-1000 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$129
In Stock
25.4 mm 1010-1550 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$124
In Stock
25.4 mm 440-700 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$134
In Stock
25.4 mm 660-1000 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$144
In Stock
25.4 mm 1010-1550 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$278
In Stock
25.4 mm 440-700 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$291
In Stock
25.4 mm 660-1000 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$307
In Stock
25.4 mm 1010-1550 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$213
In Stock
50.8 mm 440-700 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$241
In Stock
50.8 mm 660-1000 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$266
In Stock
50.8 mm 1010-1550 nm Grade A N-BK7 15-5 scratch-dig 45°
In Stock
$266
In Stock
50.8 mm 440-700 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$292
In Stock
50.8 mm 660-1000 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$307
In Stock
50.8 mm 1010-1550 nm UV Grade Fused Silica 15-5 scratch-dig 45°
In Stock
$336
In Stock
50.8 mm 440-700 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$359
In Stock
50.8 mm 660-1000 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$380
In Stock
50.8 mm 1010-1550 nm UV Grade Fused Silica 10-2 scratch-dig 45°
In Stock
$137
In Stock
25.4 mm Uncoated Grade A N-BK7 20-10 scratch-dig
In Stock
$224
In Stock
50.8 mm Uncoated Grade A N-BK7 20-10 scratch-dig
In Stock

Features

Sample Broadband Beams

In a beam sampler, percentage of reflected light is determined by the Fresnel reflection from a single surface. At the nominal 45° AIO the beam sampler reflects approximately 10% and 1% for s- and p- polarizations, respectively. Reflectance from a single uncoated surface in both S- and P- polarizations is shown.

N-BK7 Substrates for VIS and NIR Applications

N-BK7 is an excellent lens material for most visible and near infrared applications. It is the most common borosilicate crown optical glass, and it provides great performance at a good value. Its high homogeneity, low bubble and inclusion content, and straightforward manufacturability make it a good choice for transmissive optics.

UV Fused Silica for UV & 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.

Choice of Three Broadband Coatings

Three broadband antireflection coatings are offered for 45° angle of incidence beams. NC.1 covers the 440-700 nm spectral range. NC.2 covers the 600-1000 nm spectral range. NC.3 covers the 1110-1550 nm spectral range.

Power Measurement Applications

A common application for beam samplers is picking off a portion of a beam in order to track changes in beam power vs time using a detector. This information may be used as part of a feedback loop to regulate power, or could simply be used to log power in order to normalize experimental results at a later time. For measuring beam power, the beam sampler should be oriented such that the laser is p-polarized. This choice will maximize transmitted power and attenuate power incident on the detector.