Beamsplitters
Narrow Band Beamsplitter Plate

        These type Beamsplitters are plate windows coated with an all dielectric coating to separate laser light into your choice of R/ T split ratios. These Beamsplitters perform almost no absorption and are designed specifically for 45at the wavelength and polarization being used. Standard substrates have an AR coating on the second surface and the parallelism is less than 1 minute of arc.



Specifications


S
Material: BK7 glass
Dimension Tolerance: 0.2mm
Thickness Tolerance: 0.2mm
Surface Figure: l/4 @ 632.8 nm
Surface Quality: 40-20
Parallelism: 1 arc minute
T/R:
50/505%, for random polarization
T=(Ts+Tp)/2, R=(Rs+Rp)/2
Coatings: (AOI: 45 deg.)
S1: Single wavelength partial reflective Coatings
S2: "V" type AR-coatings
Wavelength (nm) 488, 514.5, 532, 632.8, 633, 670, 755, 850, 980, 1064, 1319, 1550
PART NO NBSP101 NBSP201 NBSP301 NBSP401
Size (mm) 12.7x12.7x3 25.4x25.4x3 50.8x50.8x3 25.4x3

Note: Other dimensions and other central wavelength coatings are available in prototype and production quantities.

 
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