The KMLabs Eclipse Pockels cell driver provides pulse-picking capability useful for reducing the repetition rate of an optical pulsetrain. A common use of the Eclipse is to reduce the repetition rate of a Ti:sapphire oscillator pulsetrain from ~80MHz down to ~1 – 20 kHz for seeding an amplifier system. The Eclipse is designed to rotate the polarization of optical light passing through it by as much as a half-wave at ~800nm. Customers control the timing and rate at which this rotation occurs by supplying a TTL pulsetrain with a maximum frequency of 20 kHz. The Eclipse includes a Pockels cell crystal integrated into a compact box which includes the high-voltage driver. A computer-controlled, rack-mountable power supply also is included. … Control your pulsetrain!