PBS

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Polarizing Cube Beamsplitters split randomly polarized beams into two orthogonal, linearly, polarized components-S-polarized light is reflected at a 90deg. Angle while P-polarized light is transmitted. Each beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of prisms.

Currently, as coating technologies and assembly techniques have improved, so there are many types of polarizing beamsplitter cubes can be provided in the market. THATSHIGH has own technology in providing two types of high precision polarizing beamsplitter cube. One is by using cemented method for PBS (as standard PBS), the other one is using optical bonding method for the interface of PBS (as high power PBS).

A primary advantage of a direct-bonding technique over optical contacting is that the increased strength of the bond allows processing after assembly,meaning that the bonded parts can be cut,shaped,polished or coated to create highly tolerance or multicomponent assemble without the temperature constraints or threat of delamination exhibited by other assembly techniques.Because there is no epoxy,the finished units are compact and thermally stable ,exhibiting insignificant levels of absorption or scattering loss at the optical interface

THATSHIGH Specification for Polarizing Beam Splitter(PBS)

	Standard PBS	High Power PBS
Interface Surface	Cemented	Optically Bonded
Damage Threshold@1064nm	0.3J/cm2	>15J/cm2
Beam Deviation< 3′	< 3′	< 3′
Flatness	L/4	L/8
Transmission@1064nm	Tp>95%	Tp>97%;Tp>96%@355nm
Surface Figure	60/40 Scratch/Dig	40/20(20/10) Scratch/Dig
Extinction Ratio	>500:1	>1000:1