QBU-BT-series consist of six Pockels cell drivers differ with their output voltage range (see also How to order? section) and covering range up to 6.0 kV.
All 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.
High repetition rates and fast transition times are additional benefits.
Performance
In internal synchronization mode performance of QBU-BT-series (from QBU-BT-1004 to QBU-BT-6024) 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).
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.
Output:
pull-down scheme
push-up scheme
repetition of external signal
Voltage, high level
regulated, up to 6 kV
1
Voltage, low level
fixed, 0 V
Pulse width
1 us - 1 s (in internal synchronization mode)
200 ns - DC (in external synchronization mode)
Repetition rate
up to 50 kHz (CW), up to 100 kHz (burst-mode)
1
Jitter
10 ns (1 ns in LJ-modification)
Delay time
1 us (100 ns in LJ-modification)
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
1)
these parameters aren't indepenent and cannot achieve their maximum at the same time
2)
10-90% level, warranted at load capacitance 11 pF and below
Voltage modifications
2.4-6.0 kV high voltage adjustment range
2.0-5.0 kV high voltage adjustment range
1.6-4.0 kV high voltage adjustment range
1.2-3.0 kV high voltage adjustment range
0.8-2.0 kV high voltage adjustment range
0.4-1.0 kV high voltage adjustment range
(*) Other output voltages are available on request
Example
2.0-5.0 kV high voltage adjustment range
Low jitter option
Русский