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Home Electro-optics MOSFET-based Pockels Cell Drivers Bench-top Pockels Cell Drivers QBD-BT-series Pockels Cell Drivers

QBD-BT-series Pockels Cell Drivers

QBD-BT-series is a series of bench-top (table-top) Pockels Cell Drivers, designed for the laboratory use and based on OEM PC drivers of the QBD-series. Key parameters and features:

  • Push-up or pull-down modifications
  • Up to 6 kV output voltage
  • Up to 100 kHz and higher repetition rate
  • < 20 ns rise- and fall-times

Applications

  • Q-switching

Description

QBD-BT-series consist of twelve Pockels cell drivers, designed for different output voltages (ranging up to 6.0 kV), and operating scheme [see also How to Order (?) section].

High repetition rates and fast transition times are additional benefits of QBD-BT-series Pockels cell drivers.

Performance

In internal synchronization mode performance of QBD-BT-series (from QBD-BT-1004-UP/DN to QBD-BT-6024-UP/DN) is limited with values given in the Table below. Total load capacitance of Pockels Cell and connective cable is assumed as 23 pF (this corresponds to a fairly long 50 cm output HV cable, bent in non-optimal way and higher than normal Pockels cell capacitance).

Output voltage, kV Repetition rate, kHz (*)
0.40 – 0.79 296
0.80 – 1.19 200
1.20 – 1.39 160
1.40 – 1.59 130
1.60 – 1.79 110
1.80 – 1.99 90
2.00 – 2.49 56
2.50 – 2.99 40
3.00 – 3.49 31
3.50 – 3.99 24
4.00 – 4.49 18
4.50 – 4.99 15
5.00 – 5.49 12
5.50 – 6.00 9-11

Higher performance can be achieved in external synchronization mode.

In burst mode (i.e. for short term operations), the performance increases by at least a factor of two and exceeds 100 kHz at low operating voltages and low load capacitances. The performance deteriorates for higher load capacitance.

Technical Specifications

INPUT
Voltage 10/230 VAC, 50/60 Hz
Current Consumption <1 A
OUTPUT
Modifications by operational modes Pull-down (= normally on),
or Push-up (= normally off)
Synchronization Internal and External
Voltage, high level Adjustable, up to 6 kV1
Voltage, low level fixed, 0 V
Rise time (fall time) <20 nsec (<20 nsec)2
Recovery time 5-10 µsec (depends on load)
Timing Jitter ~1.0 nsec
Delay Time ~100 nsec
Load Capacitance up to 0.5 nF1
ENVIRONMENT
Operational Temperature 0…+40°C
Storage temperature -20…+60°C
Humidity 90%, non-condensing
PHYSICAL
Exterior Dimensions (LxWxH) 225 x 200 x 60 mm
Weight <2 kG

1) These parameters aren’t independent, and cannot achieve their maximum at the same time
2) 10-90% level, warranted for a load capacitance of 23 pF and below

How to Order

Pull-down (normally on) modifications:

Model* Description
QBD-BT-6024-DN Pull-down scheme, 2.4-6.0 kV high voltage adjustment range
QBD-BT-5020-DN Pull-down scheme,
2.0-5.0 kV high voltage adjustment range
QBD-BT-4016-DN Pull-down scheme,
1.6-4.0 kV high voltage adjustment range
QBD-BT-3012-DN Pull-down scheme,
1.2-3.0 kV high voltage adjustment range
QBD-BT-2008-DN Pull-down scheme,
0.8-2.0 kV high voltage adjustment range
QBD-BT-1004-DN Pull-down scheme,
0.4-1.0 kV high voltage adjustment range

(*) Other output voltages are available on request

Push-up (normally off) modifications:

Model* Description
QBD-BT-6024-UP Push-up scheme, 2.4-6.0 kV high voltage adjustment range
QBD-BT-5020-UP Push-up scheme, 2.0-5.0 kV high voltage adjustment range
QBD-BT-4016-UP Push-up scheme, 1.6-4.0 kV high voltage adjustment range
QBD-BT-3012-UP Push-up scheme, 1.2-3.0 kV high voltage adjustment range
QBD-BT-2008-UP Push-up scheme, 0.8-2.0 kV high voltage adjustment range
QBD-BT-1004-UP Push-up scheme, 0.4-1.0 kV high voltage adjustment range
(*) Other output voltages are available on request
Example:
QBD-BT-5020-DN Pull-down scheme, 2.0-5.0 kV high voltage adjustment range

Downloads

QBD-BT series Pockels cell driver - User manual
QBD-BT-manual-en.pdf (2 MB)