Product Detail

QBU-series Pockels Cell Drivers

QBU-series Pockels cell drivers are more functional than QBD drivers and may be used for advanced beam control: advanced q-switching, beam slicing, pulse picking

QBU Pockels cell driver 1
QBU Pockels cell driver 2
QBU Pockels cell driver 3

Universal driver, suitable for advanced q-switching, beam slicing, pulse picking.

  • Triggering by an arbitrary external TTL signal output provides various operating schemes
  • Up to 6 kV output voltage
  • Up to 100 kHz repetition rate
  • <15 ns both rise/fall time

QBU-series is specially designed to control Pockels cells by applying a fast switching high voltage. The modules require +24 V DC power supply and pulse generator to set an operating frequency and pulse width. An output voltage level can be programmed in working range by user either manually (through onboard configuration trimpot) or remotely (applying a DC voltage to the respective pin).

Different operating modes by output signal form are possible:
• push-up (= normally off scheme), when a base voltage level equals to zero
• pull-down (= normally on scheme), when pulses are generated from base bias voltage to ground.
• user-defined scheme, with arbitrary width and frequency of pulses

The desired one could be managed by user ajusting a pulse generator correspondingly.




QBU-series is based on MOSFET technology and offers high repetition rates and fast transition time for both pulse edges.

Input:

Voltage
+24 V DC
Current
0.8 A max

Output:

Working modes
output is triggered by an arbitrary external TTL signal
HV high level (pulse amplitude) 1
adjustable in range of HVMIN – HVMAX (see also How to order? section)
HV low level (pulse basement)
fixed, 0 V
Pulse width
200 ns - ∞
Maximum repetition rate 1
up to 100 kHz and higher (load and voltage dependant, see also manual)
Rise / fall time 2
<15 ns @ load < 11 pF
Jitter
±1 ns for LJ-modification
±10 ns for low-cost version
Delay time
±1 ns for LJ-modification
±10 ns for low-cost version

Safety:

Protections
from overheating (approx. 72 °C)

Environment:

Cooling
forced air cooling at high repetition rates
Operation temperature
+10 … +40 °C (wider temperature range is available on request)
Storage temperature
-20 … +60 °C
Humidity
0 ... 90%, non-condensing

Other:

Size (LxWxH)
130x80x32 mm
Weight
0.1 kg

1) these parameters aren't indepenent and cannot achieve their maximum at the same time
2) 10-90% level

Modifications

Model *
Description
QBU-6024-LJ
2.4-6.0 kV high voltage adjustment range
QBU-5020-LJ
QBU-5020
2.0-5.0 kV high voltage adjustment range
QBU-4016-LJ
QBU-4016
1.6-4.0 kV high voltage adjustment range
QBU-3012-LJ
QBU-3012
1.2-3.0 kV high voltage adjustment range
QBU-2008-LJ
QBU-2008
0.8-2.0 kV high voltage adjustment range
QBU-1004-LJ
QBU-1004
0.4-1.0 kV high voltage adjustment range

(*) Other output voltages are available on request



Example

QBU-5020-LJ
Low jitter option
2.0-5.0 kV high voltage adjustment range

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