DQF Pockels Cell Driver for Q-Switching for Flashlamp Pumped Lasers

DQF series drivers are designed for Q-switching of nanosecond flashlamp pumped lasers without use of phase retardation plates. High voltage is applied to Pockels cell in order to inhibit oscillation. Pockels cell is opened by negative polarity pulse allowing laser to radiate.

 

Drivers DFQ-0.2-5D and DFQ-0.2-5B need an external HV power supply, PS-5 model is recommended.

 

Drivers DFQ-0.1-8D and DFQ-0.1-8B are integrated with 4 kV HV power supplies. Voltage control is done using CAN interface. We can offer CAN-USB converter with CAN browser software for Windows operating system. Converter must be ordered separately.

 

Drivers DQF-0.2-5D and DQF-0.1-8D are designed for operation with DKDP crystals, while drivers DQF-0.2-5B and DQF-0.1-8B are designed for BBO crystals.

 

Delivery

Estimated delivery time: Request

Max output power
U2 value

Drivers without integrated HV power supply

Code Max output power U2 value Price Delivery Add to cart
DQF-0.2-5D 5 kV equal to 0.25xU1 Request Request To cart
DQF-0.2-5B 5 kV 0 V Request Request To cart

Drivers with integrated 4 kV HV power supply

Code Max output power U2 value Price Delivery Add to cart
DQF-0.1-8D 8 kV equal to 0.25xU1 Request Request To cart
DQF-0.1-8B 8 kV 0 V Request Request To cart

The meaning of the U2 value can be seen in the control time diagram.

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Model DQF-0.2-5D DQF-0.2-5B DQF-0.1-8D DQF-0.1-8B
Maximum high voltage to cell (HV)
pulse amplitude (U1+U2)
5 kV 8 kV
U1 value equal to HV powering voltage equal to HV powering voltage
U2 value equal to 0.25xU1 0 V equal to 0.25xU1 0 V
HV pulse time fall time (a) < 15 ns < 12 ns
HV pulse rise time, typical (b) 60 µs 120 µs
HV pulse duration, typical (c) 300 µs (1200 µs optionally) 700 µs
HV pulse repetition rate ≤ 250 Hz ≤ 100 hz
HV pulse delay (d) 40 ns 25 ns
External triggering pulse duration 100-1200 µs 120-700 µs
External triggering pulse amplitude 3-5 V (50 Ohms) 3.5-5 V (50 Ohms)
External triggering pulse rise & fall time < 20 ns < 20 ns
Board dimensions 92 x 70 x 22 mm* 92 x 70 x 27 mm*
Mounting holes location for M3 studs 84 x 62 mm 84 x 62 mm
External powering requirements:  
DC supply 12-24 V, max 200 mA 12 V, max 15 mA
HV supply 4 kV, 1 mA n/a

 

* Keep safety distance at least 5 mm from any side of board or any component to surrounding conductive parts.

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