Electro-Optical Modulator

Models 20, 22, 26 and 28 utilize crystals of ADP (45o X cut).

The chemical formula for ADP is NH4 H2 PO4 and that for D-KDP is KD2 PO4 .

It has better transmission at 1064nm and is well suited for short pulse (7ns) application as used in the Model 301 since the pulse width is too narrow to excite any piezo-electric resonances.