1

Material

BK7 Grade A Optical Glass

 2

Dimension Tolerance

+0.0/-0.2mm

 3

Beam Deviation

<3 arc minutes

 4

Extinction Ratio

>1000:1 for narrow band and 500:1 for broadband

 5

Flatness

λ/4 @ 632.8nm

 6

Surface Quality

60/40 Scratch and Dig

 7

Principle Transmittance

Tp>95% and Ts<1% 

 8

Principle Reflectance

RS>99% and RP<5% 

 9

All input and output faces

AR coated

 10

Standard Coating wavelength

NarrowBand: 488, 532, 632.8, 650, 808, 850, 980, 1064, 1310, 1550 nm
Broadband: 450-650, 650-900, 900-1200, 1200-1550, 1500-1610 nm