Polarizing Beamsplitters Cubes

Polarizing beam splitters are designed to split incident light into reflected S-polarized and transmitted P-polarized beams. They can be used to split unpolarized light or incident light at a 50/50 ratio, or for polarization separation applications such as optical isolation. A polarizing Beamsplitters cubes are gotten by simply coating the internal face of a cube beamsplitter with the polarizing film. The polarizing beamsplitter cube can split the unpolarized beam or incident beam into two orthogonal, linearly polarized components. P-polarized light is transmitted, while s-polarized light is reflected, both with negligible absorption. The polarizing beamsplitter cube is made of a pair of precision high-tolerance right-angle prisms cemented together. One prism of the Polarizing beamsplitter has a partially reflective metallic-dielectric coating applied to its hypotenuse surface. To minimize power passing through the ical cement, the incident light should enter the prism through the coated hypotenuse path. 


Types Of Polarizing Beamsplitters Cubes

Polarizing beamsplitters cubes come in different forms and configurations, either as a prism, laser-line, or broadband.


Prism Polarizing Beamsplitter Cube

This is the basic and most type of polarizing beamsplitter cube. This is a type of cube beamsplitters that are constructed by cementing together two precision right-angle prisms with the appropriate interference coating on the hypotenuse surface. It operates in the visible and very near-infrared with constant performance over a 200 nm wavelength. You can choose from our large collections of custom optical mirror lenses at Alpine research optics.


Laser-line Polarizing Beamsplitter Cube

Laser line polarizing cube beamsplitters provide efficient, narrowband polarization state change for higher power lasers. It has an extinction ratio above 1000:1, and they are recommended for use in pulsed laser systems and for purifying the polarization state in multimode lasers. They also have an extinction ratio of above 100:1 for UV laser line beamsplitters with also a low wavefront distortion. 


Broadband Polarizing Beamsplitters Cube

Broadband polarizing beamsplitter cube provides a very good polarization for use with multiple or tunable sources. Each polarizer consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion. They have a low wavefront distortion and a superior broadband performance. Broadband Polarizing Beamsplitters Cube is formed by cementing two right-angle prisms together. One of the two prisms has the partially reflective metal-dielectric coating applied to its hypotenuse surface. The broadband polarizing beamsplitters cube-coated prism is marked with a visible dot. When an incident light enters the prism through the coated hypotenuse surface, it minimizes power passing through the optical cement. Alternatively, a beam entering via the uncoated prism results in more than triple the fluence in the cement (the transmitted component, plus a double pass by the reflected component). With higher power beams this can result in degradation of the cement.


Features Of Polarizing Beamsplitters Cube

  • The polarizing beamsplitter cube has a wavelength range of 450 to 2020nm
  • It reflects s-polarization at an angle of 90°
  • It is available as both mounted and unmounted forms
  • It has a high extinction ratio of Ts: Tp up to 3000:1
  • It has a dimension tolerance of +0/-0.13mm
  • It has a beam deviation of about < 1 arc minute
  • It functions at a temperature range between 50° to 80°c
  • It has a standard wavelength range for a narrow band of 488, 532, 633, 780, 850, 980, 1064, 1310, 1550nm 
  • It has a standard wavelength range for broadband; 450-680, 650-850, 900-1200, 1250-1570, 1500-1610