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QBD-mini Pockels cell drivers

Applications

  • Q-switching

Features

  • Compact (as small as 90x50x20 mm)
  • Push-up or pull-down modifications
  • Up to 4.0 kV output voltage
  • Up to 50-100 kHz repetition rate (depends on voltage)
  • < 20 ns rise time or < 20 ns fall time
qbd-mini-manual-en.pdf

Download user manual (426kB)

QBD-mini is a series of high repetition rate Pockels cell drivers allowing simple and reliable control of Q-switched lasers. Output voltages may be selected in range up to 4 kV.

Driver may be manufactured in two modification: for pull-down scheme (= normally on scheme) and for push-up scheme (= normally off scheme).

qbd-h60.gif

High repetition rates and fast transition times are additional benefits.

Performance

For instance, QBD-mini-4016-UP/DN run with proper load (Pockels cell with 5-7 pF capacitance plus 30-50 cm cable) and under condition of appropriate cooling has typical performance as below:

Output voltage, kV
Repetition rate, kHz (*)
1.60
110-150
2.00
70-110
3.00
35-50
4.00
18-25

(*) Values are approximate, exact performance depends on actual load capacitance and cooling conditions.

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

Higher load capacitance decreases the performance.

Input:

Voltage
+24 VDC

Output:

Modifications by working modes
pull-down (= normally on)
or push-up (= normally off)
Voltage, high level
regulated, up to 4 kV 1
Voltage, low level
fixed, 0 V
Repetition rate
up to 30 kHz (CW), up to 50 kHz (burst-mode) 1, 2
Rise time (fall time)
< 20 ns 3
Recovery time
5-10 us (depends on load)
Jitter
10 ns
Delay time
1 us
Load capacitance
up to 0.5 nF 1

Environment:

Operation temperature
+10 … +40 °C (wider temperature range is available on request)
Storage temperature
-20 … +60 °C
Humidity
90%, non-condensing

Other:

Size (LxWxH)
90x50x20 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, warranted at load capacitance 23 pF and below

Pull-down (normally on) modifications

Model *
Description
QBD-mini-4016-DN
Pull-down scheme,
1.6-4.0 kV high voltage adjustment range
QBD-mini-3012-DN
Pull-down scheme,
1.2-3.0 kV high voltage adjustment range
QBD-mini-2008-DN
Pull-down scheme,
0.8-2.0 kV high voltage adjustment range
QBD-mini-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-mini-4016-UP
Push-up scheme,
1.6-4.0 kV high voltage adjustment range
QBD-mini-3012-UP
Push-up scheme,
1.2-3.0 kV high voltage adjustment range
QBD-mini-2008-UP
Push-up scheme,
0.8-2.0 kV high voltage adjustment range
QBD-mini-1004-UP
Push-up scheme,
0.4-1.0 kV high voltage adjustment range

(*) Other output voltages are available on request

Example

QBD-mini-4016-UP
Push-up scheme,
1.6-4.0 kV high voltage adjustment range
qbd-mini-manual-en.pdf

Download user manual (426kB)

qbd-mini-step.zip

Download STEP model (ZIP achieve, 3MB)