Stackable Beam Splitters
These wedge beam splitters are made of UV grade fused silica for use from 190 to 2000nm.
|Download Data Sheet.|
|The stackable beam splitters are designed for maximum modularity and shortest beam path. They are compatible with almost all of our cameras having the standard C mount thread and can mount either to other attenuators or to the camera itself. Each beam splitter reduces the intensity of the beam by ~20 times (see graph below) so if a camera is equipped with filters that can operate with lasers typically up to ~1 Watt, with one beam splitter it can operate up to ~20 Watts and with two beam splitters up to ~400W. The Beam Splitters will operate for wavelengths from 190nm to 2000nm. The damage threshold of the beam splitters is >5J/cm2 for 10ns pulses. The beam splitters are mounted over the fixed or variable attenuators with a simple fastening ring and can be oriented in any direction with the beam coming from right, left up, down ,or front.
The wedge angle of 10 degrees insures that only the reflection from the front surface will appear on the camera with no double images. The user must insure that there are beam stops for the transmitted and reflected beams.
Note that if possible, the user should use an even number of beam splitters so as to cancel any possible polarization effects.
|Item||Description||Clear Aperture||Wavelength||Reflectance||Path length to CCD
with 3 screw-on ND filters
|1st Wedge Beam Splitter||45 degree wedged beam splitter||Ø15mm||400-700nm||≤4%||60mm||SPZ17015|
|2nd Wedge Beam Splitter||Additional 45 degree wedged beam splitter to mount to 1st wedge beam splitter||400-700nm||≤4%||93mm||SPZ17026|
|Large aperature1st Wedge Beam Splitter||For converging beams a larger aperture 1st wedge beam splitter||Ø30mm||400-700nm||≤4%||60mm||SPZ17025|
|1st Wedge Beam Splitter||45 degree wedged beam splitter||Ø15mm||1064nm||≤1%||60mm||SPZ17031|
|2nd Wedge Beam Splitter||Additional 45 degree wedged beam splitter to mount to 1st wedge beam splitter||1064nm||≤1%||93mm||SPZ17032|