Glan Laser Prisms

High power capacity: up to 500MW/cm2 pulsed Made from high optical quality natural calcite Conveniently mounted in a metal cell Available with two, one or no escape ports for extra power capacity Excellent extinction ratio of 5x10-5 Glan laser prisms are a form of calcite prism which has been adapted for high power laser use. The two prism sections are polished at an angle between the critical angles of the e and o rays for the incoming light and are air-spaced and mounted within absorbing black glass in a cell. As light enters the polarizer one polarization orientation of the beam is refracted at a different angle from the other. Thus the e-ray hits the air-spaced interface at an angle below Brewster's angle and is transmitted. The o-ray is totally reflected out of the prism into either the black glass or the escape port. Normally they are supplied in a cylindrical cell but the cell can be cut away on one or both sides to provide an exit path for the unwanted beam. The escape port type has a greater power handling capacity than the plain metal mounts because the unwanted energy can be dumped outside the cell rather than being absorbed within it. The advantage of 2 ports is that light can enter the prism from either direction. Specifications & Tolerances Dimensions: +0.2mm Extinction ratio: 5x10-5  Angular field: +1.5° Length/Aperture ratio: 1.5:1 Cell: Black finished aluminum Material: Optical quality natural calcite Surface quality: 40-20 Wavelength range: 400-2300nm Maximum beam deviation: <2.5arcmin     Maximum power level:   No Ports   1 Port   2 Ports   CW   100 W/cm2   500W/cm2   500W/cm2   Pulsed   100MW/cm2   500MW/cm2   500MW/cm2               Glan Laser Prisms  CELL      Prism Side, a  Diameter, D  Length, L  Price  PART NUMBER   (mm)  (mm)  (mm)      8 18.9 16 $440.00 066-2220  10 22 21 $520.00 066-2230  12 25.3 23 $760.00 066-2240            15 28.5 26 $1,025.00 066-2250  17 31.75 28 $1,340.00 066-2260  20 34.8 32 $1,760.00 066-2270    For a single escape port append -1P and add $75 to the price. For a double escape port append -2P and add $150 to the price.