In comparison to Non-Polarizing Beamsplitter Cubes 14NBC, our Non-Polarizing Beamsplitters Plates 14DM-NPB feature outstanding performance.
Cubes typically cause approximately 10% loss, because of absorption in hybrid coatings.
At the same time laser induced damage threshold scales in range of approximately 0.3 J/cm2.
Non-Polarizing Beamsplitting Plates 14DM-NPB are coated with only dielectric layers, thus damage threshold is much higher and exceeds 6 J/cm2.
Separation of polarizations Rs - Rp typically is lower than 5 %. Because of this feature beamsplitters are suitable for use with an unpolarized light or light of any other state of polarization.
Standard items have a decent working bandwidth of several tens of nanometers, what makes them useful for several lasers.
For example 14DM-1-NPB6.50-45-2 beamsplitter (Rsp=50 % @ 1025 nm - 1095 nm) can be used with Yb:KGW, Yb:YAG, Nd:YAG, Yb:Glass, Nd:Glass lasers.
For usage with femtosecond lasers, STANDA has designed 14DM-1-NPB5.50-45-2 and 14DM-1-NPB2.50-45-2 beamsplitters, which do not influence pulse width, as coatings are GDD compensated.
Custom size configurations and non-standard wavelengths are also available upon request.
|Diameter tolerance||+0.0/-0.1 mm|
|Thickness tolerance||±0.1 mm|
|Surface quality||20/10 S/D|
|Surface Flatness||<λ/8 @ 632.8 nm|
|Separation of polarizations, Rs-Rp||<5 %|
|Protective chamfers||<0,25 mm x 45 deg|
|Coating Adhesion and Durability||Per MIL-C-675A|
|Laser Damage Threshold||>6 J/cm2 for 10 ns pulses @1064 nm|
Non-Polarizing Beamsplitter Plates
|Substrate material||Reflectivity Rsp, %||Wavelength, nm||Angle of incidence, °||Ordering codes|
|Ø25.4 x 5 mm||20 x 40 x 5 mm|
|UVFS||50||390 - 410 (GDD< 20 fs2)||45||14DM-1-NPB2.50-45-2||14DM-20x40-NPB2.50-45-2|
|UVFS||50||515 - 532 (GDD< 70 fs2)||45||14DM-1-NPB3.50-45-2||14DM-20x40-NPB3.50-45-2|
|UVFS||50||770 - 830 (GDD< 75 fs2)||45||14DM-1-NPB5.50-45-2||14DM-20x40-NPB5.50-45-2|
|UVFS||50||1025 - 1095 (GDD< 100 fs2)||45||14DM-1-NPB6.50-45-2||14DM-20x40-NPB6.50-45-2|
|BK7||50||1530 - 1540||45||14DM-1-NPB7.50-45-1||14DM-20x40-NPB7.50-45-1|