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QBX-08 - Arbitrary waveform Pockels cell driver


  • Electro-optics (light modulation, beam deflection, beam steering)
  • Piezo actuators, MEMS actuators
  • Ultrasonic devices
  • As single channel signal amplifier


  • Arbitrary waveform - input signal amplifier
  • High voltage - up to 800 V (1600 V on request)
  • High frequency (bandwidth) - over 50 kHz at full voltage and 60 pF, up to 1 MHz at smaller voltages and loads
  • Fast transitions - <1 μs (full slope), slew rate ~1 kV/μs

Download user manual (0.5MB)

QBX-08 is a dedicated Pockels cell driver designed for continuous pulsed applications, where output voltage value should be constantly adjustable. It is essentially a single channel signal amplifier, which could serve as an electro-optical modulator, being connected to a Pockels cell. But the application field is not limited by this.

The module requires +24 V DC power supply and waveform generator to set an operating voltage and signal form. The driver is based on a voltage amplifier, maximal output voltage is 800 V (other voltage values both smaller and higher, up to 1600 V, are available on request). A low-voltage input analog signal (0-8 V) with an arbitrary waveform is amplified with 100:1 factor and delivered to a Pockels cell.

QBX-08 contains a fan for active cooling. Driver can be supplied in built-in and encased versions. Output polarity, gain, load type, maximum output voltage are subject to modifications.


Power input
24 V DC, 1.5 A
Analog signal 0-8 V
Input impedance
50 Ohm


Output type
High voltage signal repeats the shape of low voltage input signal
Output polarity
Positive (other on request)
Output voltage
0-800 V (100:1 amplification)
Repetition rate
Up to 1 MHz (at smaller loads and voltages).
Also limited as fMAX * C * U2 = 2W, for example:
~50 kHz @ 800 V and 60 pF
~130 kHz @ 500 V and 60 pF
Rise time (fall time)
< 1 us (full slope)
Delay time
< 1 us

Load requirements and cooling:

Load type
Capacitive (other on request)
Load capacitance
< 60 pF (other on request)
Forced-air with an integrated fan


Operation temperature
+10 … +40 °C
Storage temperature
-20 … +60 °C
0 ... 90%, non-condensing


Size (LxWxH)
206x85x45 mm
0.6 kg
Both PCB and enclosed versions are available:
Pockel cell driver QBX-08 encased, single channel signal amplifier

Pockel cell driver QBX-08 enclosed, single channel signal amplifier
Pockel cell driver QBX-08 encased 2, single channel signal amplifier
Pockel cell driver QBX-08 board, single channel signal amplifier


Download user manual (0.5MB)