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QBU-BT-10kV Pockels cell drivers

Applications

  • Q-switching
  • Pulse picking, pulse slicing

Features

  • Extremely flexible solution
  • Push-up, pull-down and mixed schemes in one module
  • Up to 10 kV output voltage
  • Up to 5 kHz repetition rate at maximal voltage, up to 50 kHz at lower voltages
  • Perfectly suits for the laboratory purposes
qbu-bt-10kv-manual-en.pdf

Download user manual (1.3MB)

QBU-BT-10kV is an extension of QBU-BT-series up to 10kV operating voltage range. Due high output voltage it may be used with Pockels cells working under L/2 schemes.

Drivers allow operations in three different operating modes (pull down scheme (= normally on), push up scheme (= normally off) and external synchronization mode (= repetition of external low voltage signal)) and therefore suit ideally for the laboratory usage.

qbu-h60.gif

Due high efficiency and embedded forced air cooling multi-kilohertz operations are possible even at maximal output voltage.

Performance

In internal synchronization mode performance of QBU-BT-10kV 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
4.00-4.99
50
5.00-5.99
30
6.00-6.99
25
7.00-7.99
20
8.00-8.99
15
9.00-9.99
10
10.0-10.0
5

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 can achieve 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:

Working modes
pull-down scheme
push-up scheme
repetition of external signal
Voltage, high level
adjustable in 4 – 10 kV range
Voltage, low level
fixed, 0 V
Pulse width
1 us - 1 s (in internal synchronization mode)
200 ns - DC (in external synchronization mode)
Max. repetition rate
> 5 kHz at the full load (10 kV, 11 pF)
> 50 kHz at lower voltages
Rise time (fall time)
< 20 ns / < 25 ns 1
Jitter
~ 1.5 ns
Delay time
~ 150 ns

Environment:

Protections
from overheating (approx. 72 °C)
Operation temperature
0 … +40 °C
Storage temperature
-20 … +60 °C
Humidity
90%, non-condensing

Other:

Size (LxWxH)
300x220x80 mm
Weight
2 kg
1) 10-90% level, warranted at load capacitance 11 pF and below

Modifications

Model *
Description
QBU-BT-10kV
4.0-10.0 kV high voltage adjustment range

(*) Other output voltages are available on request

Example

QBU-BT-10kV
4.0-10.0 kV high voltage adjustment range
qbu-bt-10kv-manual-en.pdf

Download user manual (1.3MB)