BME Bergmann

Bergmann Messgeräte Entwicklung KG

Leysop 6mm RTP Pockels Cell

This RTP Pockels cell has been fitted with two RTP crystals each only 7mm long, 6mm cross section.
The dimensions of these crystals give a half-wave voltage at 1064nm of 3.6kV. Since the application
only requires 10kHz maximum repetition rate, a KD*P driver has been modified for this cell, as this
driver will give the fastest rise time.

The oscilloscope trace below shows the measurement of the optical transmission in a single-pass setup
measured with a photodiode of risetime 1nsec.
Parameters: 1064nm, 3.6kV, time difference of On/Off triggers 10nsec.

This oscilloscope trace shows the measurement of the optical transmission in a single-pass setup
measured with a photodiode of risetime 1nsec. In order to reduce rise and fall times,the time
difference between the On/Off triggers was reduced, at the same time increasing the drive voltage
to the cell.
Parameters: 1064nm, 4.9kV, time difference of On/Off triggers 2nsec.