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Home Electro-optics MOSFET-based Pockels Cell Drivers Bench-top Pockels Cell Drivers QBU-BT-10 kV Pockels Cell Drivers

QBU-BT-10 kV Pockels Cell Drivers

QBU-BT-10kV is a bench-top (table-top) Pockels cell driver designed for the laboratory usage and based on OEM Pockels cell driver QBU-10kV. Key parameters/features are:

  • Extremely flexible topology;
  • Push-up scheme, pull-down scheme, mixed or user-defined in one module (duplicates at its HV output the external driving TTL signal);
  • Up to 10 kV output voltage;
  • Up to 5 kHz repetition rate at maximal voltage, up to 50 kHz at lower voltages;
  • < 20 nsec rise/fall time;
  • Perfectly suitable for the laboratory purposes.

Applications

  • q-switching, pulse slicing, Pulse picking, Advanced Beam Control

Description

QBU-BT-10kV is an extension of QBU-BT-series with up to 10kV operating voltage range. Due to high output voltage, it may be used with Pockels cells working in λ/2 schemes, or in lasers with longer wavelengths.

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

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

Due to 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 to values presented 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 (*)
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
9.00-10.0 5-10

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), repetition of TTL signal
Synchronization Internal and External
Voltage, high level/low level Adjustable, in 4-10 kV range/fixed, 0 V
Rise time (fall time) <20 nsec (<25 nsec)1
Pulse width 1 µsec – 1 sec (in internal synch. mode)
200 nsec – DC (in external synch. mode)
Pulse Repetition Rate > 5 kHz at the full load (11 pF/10 kV); >50 kHz at lower voltages
Timing Jitter ~1.5 nsec
Delay Time ~150 nsec
ENVIRONMENT
Protection From overheating (approx. 72oC)
Operational Temperature 0…+40°C
Storage temperature -20…+60°C
Humidity 90%, non-condensing
PHYSICAL
Exterior Dimensions (LxWxH) 300 x 220 x 80 mm
Weight <2 kG
  1. 10-90% level, warranted for a load capacitance of 11 pF and below

How to Order

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

Downloads

QBU-BT-10kV Pockels cell driver - User manual
QBU-BT-10kv-manual-en.pdf (1 MB)