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Home Electro-optics MOSFET-based Pockels Cell Drivers Pockels Cell Driver Boards QBU-nano avalanche transistor Pockels cell driver

QBU-nano avalanche transistor Pockels cell driver

Applications

  • ultrafast optical beam modulation and deflection
  • control of laser regenerative amplifiers
  • pulse picking

Features

  • Input – 12 V DC
  • Pulse width adjustable up to ~ 800 ns
  • Unipolar output
  • Up to 5.8 kV output voltage
  • Up to 2 kHz repetition rate
  • 1-3 ns rise and fall time
  • Operating temperature -40…+60° C

Description

QBU-nano is a compact Pockels cell drivers producing high voltage quasi-rectangular unipolar pulses with high repetition rates, fast rise and fall time and adjustable pulse amplitude and pulse width. Wide temperature range of operation is another important feature.

The module requires +12 V DC power supply and a pulse generator to set an operating frequency and the pulse duration. An output voltage level (up to 5.8 kV) can be programmed in 70-100% level from VMAX range by user either manually (through onboard configuration trimpot) or automatically (applying a DC voltage between respective pins).

The output pulse duration is determined by time between two triggers, X3 and X4.

QBU-nano output signals

QBU-nano is based on avalanche transistors and offers fast transition time for both pulse edges.

Technical Specifications

Input:

Voltage
+12 V DC (8-16 V)
Current
500 mA max

Output:

Type
unipolar
Voltage, high level
1300-2000 V for 2000 V modification
1800-2800 V for 2800 V modification
2600-3800 V for 3800 V modification
3600-4800 V for 4800 V modification
4400-5800 V for 5800 V modification
Repetition rate 1
2kHz max for 2000V, 2800V, 3800V modifications
1kHz max for 4800V modification
500Hz max for 5800V modification
Pulse width
up to 800ns adjustable
Rise time 1
1-3 ns
Fall time 1
1-3 ns
Delay 2
15-20 ns typ.
Jitter 2
0.1-0.2 ns typ.
Pulse-to-pulse stability
< 1%
Load capacitance
5-7 pF recommended, 10 pF max for most of modifications
3 pF recommended, 5 pF max for 5800 V modification

Environment:

Operation temperature
-40 … +60 °C

Other:

Size (LxWxH)
80x50x20 mm
Weight
0.1 kg
1) depends on load capacitance and pulse amplitude
2) depends on trigger signal parameters

How to Order

Voltage modifications

Model
Description
QBU-nano-2002
UOUT= 1.3 – 2.0 kV
FMAX= 2 kHz
QBU-nano-2802
UOUT= 1.8 – 2.8 kV
FMAX= 2 kHz
QBU-nano-3802
UOUT= 2.6 – 3.8 kV
FMAX= 2 kHz
QBD-nano-4801
UOUT= 3.6 – 4.8 kV
FMAX= 1 kHz
QBU-nano-58005
UOUT= 4.4 – 5.8 kV
FMAX= 0.5 kHz
Load capacitance 3 pF is recommended, 5 pF max

Downloads

QBU-nano-manual-en
QBU-nano-manual-en.pdf (2 MB)