IR Display Plates and IR Beam Probes are versatile instruments that present clear, high contrast images of all near IR laser beams. These displays are made with infrared sensitive phosphors which offer a variety of unique features, variable image retention times for pulsed lasers, high resolution for CW YAG, and a good response to Gallium Arsenide light-emitting diodes. All near IR lasers are capable of being displayed over a wide sensitivity range.
Surface #3 is used primarily for viewing gallium arsenide light-emitting diodes and for probing CW YAG laser beams. This surface operates on a different principle than previously described. Energy is stored in the phosphor surface when it is exposed to fluorescent room lights or UV light. Near IR radiation stimulates the release of this energy as yell-orange light. Consequently, the beam appears as a bright image on a dark background. After the phosphors have absorbed a given amount of IR energy, the surface can become depleted. The beam must then be moved to a new area of the surface or the surfaced recharged.
All plate and imaging surfaces have a matte finish for safe beam displays, but we recommend using safety eyewear for all laser related applications.