Optical Substrates
Dielectric Coated Optics
Metallic Coated Optics
Off-Axis Mirrors
Variable Reflectivity Mirrors
Non Polarizing Beamsplitter Cubes
Polarizing Optics
Adaptive Optical Systems
Coatings Section
Eye Protection     
General Information
Laser Safety
Protective Laser Glasses Frames
Protective Laser Glasses Filters
Protective Laser Windows
My Account
User Name:
Remember login
Restore password | Register account
My WishList
There are no products in the WishList.
Login To View Cart and Submit Inquiry
STANDA in Lithuania
STANDA  P.O. Box 2684, 03001 Vilnius, Lithuania
Phone +370 5 2651474, Fax +370 5 2651483
E-mail: sales@standa.LT
Standa in the World
Home > Dielectric Coated Optics > 14DM-NPB - Non-Polarizing Beamsplitter Plates
Non-Polarizing Beamsplitter Plates
GDD - Group Delay Dispersion
No absorption loss
High laser induced damaged threshold
Separation of polarizations Rs-Rp<5 %
GDD compensated coatings for fs applications

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.

Standard Specifications
Diameter tolerance+0.0/-0.1 mm
Thickness tolerance±0.1 mm
Clear Aperture>90%
Surface quality20/10 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 DurabilityPer MIL-C-675A
Laser Damage Threshold>6 J/cm2 for 10 ns pulses @1064 nm

Non-Polarizing Beamsplitter Plates
Substrate materialReflectivity Rsp, %Wavelength, nmAngle of incidence, °Ordering codes
Ø25.4 x 5 mm20 x 40 x 5 mm
UVFS50390 - 410 (GDD< 20 fs2)4514DM-1-NPB2.50-45-214DM-20x40-NPB2.50-45-2
UVFS50515 - 532 (GDD< 70 fs2)4514DM-1-NPB3.50-45-214DM-20x40-NPB3.50-45-2
UVFS50770 - 830 (GDD< 75 fs2)4514DM-1-NPB5.50-45-214DM-20x40-NPB5.50-45-2
UVFS501025 - 1095 (GDD< 100 fs2)4514DM-1-NPB6.50-45-214DM-20x40-NPB6.50-45-2
BK7501530 - 15404514DM-1-NPB7.50-45-114DM-20x40-NPB7.50-45-1