Beam splitters take on many forms; cubes, plates, hexagons, pentagons, polarizing, non -polarizing (usually somewhere in between), narrowband, broadband, dielectric, air-spaced, metal, cemented, optically contacted (epoxy free bonding)... It is our job to help you sort out specifications that will meet your requirements for performance and cost.
Some of the key parameters to think about are; the wavelength range, polarization and physical size requirements. Also, if the beam splitter will be used inside an interferometer, you may need to consider path length and phase matching requirements. It is always good if you can explain how you will be using your beam splitter, it can really help us to define out your requirements.
Beam Splitter Cubes
The most useful device in any laser lab; the Universal Beam Splitter*. Variable transmission from 10% to 98%. Variable reflectivity from 90% to 2%.
Constant 90 degree reflection
Material: Fused Silica
Clear aperture: 5mm
Transmitted beam offset < 0.010mm
Fits standard 1" diameter mirror mounts
Loss = 1%
* Not completely Universal, the light must be monochromatic and if the laser is pulsed then pulses cannot be shorter than 100 pico seconds in length.