LightGate BBO Pockels cells are the preferred alternative to KD*P Pockels cells for high-average power and high repetition rate applications.  The LightGate series BBO Pockels cell employs dual crystal geometry to minimize drive voltage (~3.4kV quarter-wave voltage @ 1064nm for 4mm aperture LightGate 4).   BBO is transparent from approximately 0.2 to 2.1mm and is not subject to tracking degradation.  It also shows low piezoelectric ringing, which is useful for repetition rates of hundreds of kilohertz.  LightGate Pockels cells are useful for regenerative amplifiers and in high pulse repetition rate micro-machining lasers and high-average power lasers for material processing and metal annealing.