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Home Electro-optics MOSFET-based Pockels Cell Drivers Pockels Cell Driver Boards QBU-series Pockels Cell Drivers QBU-mini Pockels Cell Drivers

QBU-mini Pockels Cell Drivers

QBD-mini is the subcompact driver in the QBD-series. Main parameters/features are as follows:

  • Duplicates at its High-Voltage Output the external driving TTL signal
  • Up to 3.5kV output voltage
  • Up to 50 kHz Pulse Repetition Rate (depends on voltage)
  • <15 nsec (~10 nsec typ.) rise- and fall times
  • Compact OEM design (as small as 140x50x20 mm)

Applications

  • Q-switching, Pulse Slicing, Pulse Picking

Description

QBU-mini-series consist of several Pockels Cell Drivers, designed for different output voltages (see also How to order? section), and ranging from 400V to 3.5 kV.
Modules have fast transition times in both directions, and duplicate at their HV Output the external driving TTL signal. As a result, they may be used in Q-switched lasers of push-up scheme, pull-down scheme, as well for mixed-type or another user-defined configuration.

Under conditions of appropriate forced air cooling, low load capacitance and low operating voltage modules may achieve performance up to 30 kHz (CW) or 50 kHz (in burst-mode).

Technical Specifications

INPUT
Voltage +24 VDC
OUTPUT
Operational mode repetition of external TTL input signal
Voltage, high level adjustable, up to 3.5 kV1
Voltage, low level fixed, 0 V
Pulse width 200 nsec – DC
Max. repetition rate up to 30 kHz (CW), up to 50 kHz (burst-mode)1, 2
Rise time (fall time) ~10 nsec typ. 3
Jitter ~2 nsec
Delay time ~150 nsec
ENVIRONMENT
Operational Temperature +10 °C to +40 °C (wider range on request)
Storage Temperature ‐20 °C to +60 °C
Humidity 90%, non-condensing
PHYSICAL
Exterior Dimensions (LxWxH) 140x50x20 mm
Weight 0.1 kG

1 these parameters aren’t independent, and cannot achieve their maximum at the same time;
2 forced air cooling is required when operating at high repetition rates;
3 10-90% level, warranted at load capacitance 11 pF and below.

How to Order

Voltage Modifications

Model* Description*
QBU-mini-3514 1.4-3.5 kV high voltage adjustment range
QBU-mini-3012 1.2-3.0 kV high voltage adjustment range
QBU-mini-2008 0.8-2.0 kV high voltage adjustment range
QBU-mini-1004 0.4-1.0 kV high voltage adjustment range
(*) Other output voltages are available on request
 
Example:  
QBU-5020-LJ 2.0-5.0 kV high voltage adjustment range
Low jitter option

Downloads

QBU-mini Pockels cell driver - User manual
QBU-mini-manual-en.pdf (357 KB)