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QDP-50™ OEM Q-Drive for Flash Lamp Pumped Lasers product image

QDP-50™ OEM Q-Drive for Flash Lamp Pumped Lasers

A compact adjustable-delay, double pulse OEM Pockels cell driver for flashlamp-pumped lasers.

Full Product Description
Rise time:
Min: 1 µs, Max: 5 µs, 3.5 kV, 6 pF
Pulse width :
Min: 100ns, Max: 10ms, Set by user
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Product description

This driver has a repetition rate from 0–50 Hz, an output voltage of 1.2–4.0 kV, rise times of 300–800 us, a fall time of 10 ns, with pulse widths of 160–300 μs.

This driver is designed for the q-switching of lasers without the need for phase retardation plates. Once triggered, high voltage is applied to inhibit the laser output.

After an adjustable delay, the Pockels cell is opened by a fast negative pulse to allow laser output, then it returns to high voltage to inhibit additional lasing.

The Q-Drive Double Pulse has been shown to increase Pockels cell life expectancy and laser output power relative to constant voltage-on scenarios often employed.

The compact 140x92x32 mm circuit features an integrated high voltage power supply which includes remote voltage monitoring (1 V/kV) and remote shutdown.

Key features

  • 1.2–4.0 kV adjustable output voltage
  • 0–50 Hz repetition rate
  • 300–800 μs nominal on time (adjustable)
  • 160–300 μs delayed pulse (adjustable)
  • Fall time (delay pulse) less than 10 ns


Pulse repetition rateMin: 1 Hz, Max: 50 Hz, Same as trigger input
Amplitude (V1+V2) adjustable (V2=10% of V1)Min: 1.2 kV, Max: 4.0 kV
Total HV on time (adjustable or fixed)Min: 300 µs, Max: 800 µs
Delayed centre pulse (adjustable (range can be modified))Min: 160 µs, Max: 300 µs
Fall time< 10 ns (3.5 kV, 6 pF)
Rise timeMin: 1 µs, Max: 5 µs, 3.5 kV, 6 pF
Input voltageMin: 15 VDC, Max: 18 VDC, Exceeding 20 VDC will damage driver
Input current250 mA (4.0 kV, 50 Hz, 10pF load)
Input impedanceNom: 50 Ω, Min: 48 Ω, Max: 52 Ω
AmplitudeNom: 5 V, Min: 4 V, Max: 10 V
Pulse width Min: 100ns, Max: 10ms, Set by user
Propagation delayMin: 80 ns, Max: 100 ns, After trailing edge of trigger
Ambient temperature50° C