Product Detail

QBU-mini-SP series Pockels Cell Drivers

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

QBU-mini-SP Pockels cell driver 1
QBU-mini-SP Pockels cell driver 2
QBU-mini-SP 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 4 kV output voltage
  • > 10 kHz repetition rate (4.0 kV, 7 pF)
  • < 10 ns both rise/fall time

QBU-mini-SP 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).

The model is similar to QBU-mini, with the next difference:

- QBU-mini-SP QBU-mini
Pulse width, ns 100 - 2000 200 - ∞
Rise / fall time, ns < 10, typ. 7 < 15, typ. 10
Jitter, ns ± 0.2 ± 2
Delay time, ns < 40 < 160


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 generatol 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

Output:

Working modes
output is triggered by an arbitrary external TTL signal
Voltage, high level
regulated, up to 4 kV 1
Voltage, low level
fixed, 0 V
Pulse width
100 – 2000 ns
Maximum repetition rate
> 10 kHz at the full load (4.0 kV, 7 pF) and higher at lower load capacitances and voltages (see also manual) 1, 2
Rise time (fall time)
< 10 ns typ.3
Jitter
~ 0.2 ns
Delay time
< 40 ns typ.
Protection
from overheating (approx. 95 °C)

Environment:

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)
102x50x20 mm
Weight
< 0.1 kg

1) these parameters aren't indepenent and cannot achieve their maximum at the same time
2) forced air cooling is required for operating with high repetition rates
3) 10-90% level, guaranteed at load capacitance 7 pF and below

Modifications

Model *
Description
QBU-mini-SP-4016
1.6-4.0 kV high voltage adjustment range
QBU-mini-SP-3012
1.2-3.0 kV high voltage adjustment range
QBU-mini-SP-2008
0.8-2.0 kV high voltage adjustment range
QBU-mini-SP-1004
0.4-1.0 kV high voltage adjustment range

(*) Other output voltages are available on request


Example

QBU-mini-SP-3514
1.4-3.5 kV high voltage adjustment range

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