Single Wavelength Partial Reflective Coatings(Part No: SPA)

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When a narrow wavelength radiation is incident on this coating,part of the radiation is reflected and part is transmitted. Such coatings always show a high reflectivity for S-polarization radiation and high transmission for P-polarization radiation. The main application of this coating is to form a beamsplitter with 45 degree angle of incident. However,please refer to their following characteristics:

Desired reflectance (or transmittance) could arbitrary be achieved by controlling number and thickness of layers.
Internal absorption loss of the thin film is less than 0.1%.
Mechanical hardness of surface is large and therefore durable to cleaning.
By appropriately choosing refractive index and thickness of each layer, special coatings such as non-polarizing plates are possible.
Possible to use with high power laser (except for cemented cube type).

Reflectance Simulation of Single Wavelength Partial Reflection Coatings
Designed condition: 1) Substrate: BK7 Glass Non-Polarzing ____________________Plate Beamsplitter __________________2) Center wavelength: 532nm _________________ 3) Illuminant: White	Designed condition: 1) Substrate: BK7 Glass Non-Polarzing ____________________Cube Beamsplitter __________________2) Center wavelength:532um _________________ 3) Illuminant: White

Single Wavelength Partial Reflection Coatings on Non Polarizing Plates. Wavelength Range (nm) Incident Angles Transmittance (Tp,Ts) Tp-Ts Recommended Substrate Coating Index 488 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP001 532 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP002 633 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP003 670 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP004 780 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP005 1064 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP006 1300 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP007 1550 45° 50 ± 5% 5% BK7,Fused Silica UQT-SPARP008 Single Wavelength Partial Reflection Coatings on Non Polarizing Cubes. Wavelength Range (nm) Incident Angles Transmittance (Tp,Ts) Tp-Ts Recommended Substrate Coating Index 488 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC001 532 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC002 633 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC003 670 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC004 780 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC005 1064 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC006 1300 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC007 1550 0° 50 ± 5% 5% BK7,Fused Silica UQT-SPARC008
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NOTES!
	Tp stands for the transmittance of p-polarized light and Ts stands for the transmittance of s-polarized light.
	The values of laser damage threshold are based on actual measurement and not a guaranteed specification.