Transmission Grating Beam Splitter Specifications | TGB80-25
Grooves Per mm
632.8 nm Efficiency at -2nd Order
632.8 nm Efficiency at -1st Order
632.8 nm Efficiency at 0th Order
632.8 nm Efficiency at +1st Order
632.8 nm Efficiency at +2nd Order
25 mm Sq.
Operating Temperature Range
-50° C to +125° C
Damage Threshold: Pulsed
350 mJ/cm², 200 nano sec. pulse
Damage Threshold: CW laser
Transmission Grating Beamsplitters with Grooves Per mm 80 and Size (mm) 25 mm Sq.
Transmission Grating Beamsplitter for He-Ne Lasers
Optometrics transmission grating beamsplitters are commonly used for laser beam division and multiple laser line separation in visible wavelengths to diffract the transmitted beam into multiple orders.
They consist of an index matched epoxy replica on a polished glass substrate resulting in high total efficiency. These beamsplitters are designed specifically for useful division of He-Ne lasers.
Several types of gratings are available that offer different dispersion and power distributions. The diffraction angle for any wavelength may be calculated using the grating equation for normal incident light.