Polarizing beam splitter (PBS)


Polarizing beam splitter (PBS)

SOC offers optically-contacted polarizing beam splitter which simultaneously realizes high extinction ratio and high laser damage threshold. Our excellent laser resistant coating and unique contacting technology make it possible to achieve the highest damage threshold in the industry peer. Standard products are available for the wavelengths of 193nm(ArF), 248nm(KrF), 266nm(FHG), 355nm(THG), 532nm(SHG) and 1064nm. PBS for the large bandwidth Ti:Sapphire, PBS for the four wavelengths (266nm, 355nm, 532nm, 1064nm) are also available.

Key features

PBS Major Features
High laser resistivity
Laser resistivity >15J/cm2 @1064nm,10ns
(laser resistivity 300 times higher than the glued type)
Bandwidth: 60nm @center wavelength of 248nm
(Ratio to plate type: 25 times higher)
Two-wavelength type polarizers are also available
Achieved a two-wavelength type, which is difficult for the plate type
 (1064/532nm, 1064/355nm, 532/266nm, …)

PBS splits a single beam into S and P polarized laser. SOC's PBS is made by optically-contacting two prisms without glue and is suitable for UV and high-power lasers. Applicable to various sizes (5~55 mm) and wavelengths from UV to infrared.

Catalog Download

Laser Optics (pdf, 10,237KB)

Specification examples


Coated surfaces are optically contacted without glue. Application ranges from high-power laser to UV wavelength.

Product list

Model No. Wavelength Dimension Transmittance Damage threshold
PBS193-100 193nm 25.4 x 25.4 x 25.4 Tp≧85%, Ts≦0.5% ≧300mJ/cm2
PBS266-100 266nm 25.4 x 25.4 x 25.4 Tp≧95%, Ts≦0.1% ≧1J/cm2
PBS355-100 355nm 25.4 x 25.4 x 25.4 Tp≧95%, Ts≦0.1% ≧3J/cm2
PBS355-15M 355nm 15 x 15 x 15 Tp≧95%, Ts≦0.1% ≧3J/cm2
PBS532-15M 532nm 15 x 15 x 15 Tp≧97%, Ts≦0.1% ≧5J/cm2
PBS1064-15M 1064nm 15 x 15 x 15 Tp≧97%, Ts≦0.1% ≧10J/cm2

Common spec.

Material Synthetic silica
Surface defect 40-20(MIL-PRF-13830B)
Transmitted wavefront distortion λ/10(λ=633nm)
Parallelism < 0.5arcmin
Effective diameter center 80%
Angle tolerance +0/-2deg
Antireflection coating R≦0.3%/surface
Dimension tolerance +0.3/-0.3

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