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QBD-BT-series Pockels cell drivers

Applications

  • Q-switching

Features

  • Push-up or pull-down modifications
  • Up to 6 kV output voltage
  • Up to 100 kHz and higher repetition rate
  • < 20 ns rise time or < 20 ns fall time
qbd-bt-manual-en.pdf

Download user manual (542kB)

QBD-BT-series consist of twelve Pockels cell drivers differ with their output voltage range (up to 6.0 kV) and operating scheme (see also How to order? section).

Operating scheme may be either pull down scheme (= normally on) or push up scheme (= normally off). Scheme should be predefined at the time of order.

qbd-h60.gif

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 table below. Total load capacitance of Pockels cell and connective cable is assumed as 23 pF (this corresponds to pretty long 50 cm output 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
5.50-5.99
11
6.00-6.00
9

Higher performance can be achieved in external synchronization mode.

In burst mode (i.e. for short term operations) the performance increases at least twice and exceeds 100 kHz at low operating voltages and low load capacitances.

Higher load capacitance decreases the performance.

Input:

Voltage
110/230 VAC, 50/60 Hz
Current consumption
< 1 A

Output:

Modifications by working modes
pull-down (= normally on)
or push-up (= normally off)
Synchronization
internal and external
Voltage, high level
regulated, up to 6 kV 1
Voltage, low level
fixed, 0 V
Repetition rate
up to 50 kHz (CW), up to 100 kHz (burst-mode) 1
Rise time (fall time)
< 20 ns 2
Recovery time
5-10 us (depends on load)
Jitter
1 ns
Delay time
100 ns
Load capacitance
up to 0.5 nF 1

Environment:

Operation temperature
0 … +40 °C
Storage temperature
-20 … +60 °C
Humidity
90%, non-condensing

Other:

Size (LxWxH)
225x200x60 mm
Weight
2 kg
1) these parameters aren't indepenent and cannot achieve their maximum at the same time
2) 10-90% level, warranted at load capacitance 23 pF and below

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
qbd-bt-manual-en.pdf

Download user manual (542kB)