Study on high accurate orientation for large aperture electro-optical crystal

The large aperture KDP electro-optical switch is a key unit for the new high-power laser multi-pass amplification system.In the article,the influence of orientation error on the switch performance is discussed,the manufacture,orientation,performance testing system are introduced.The testing results for a 240mm×240mm×14mm large aperture KDP switching crystal,developed by us for the first time,are reported.