PCD-N series
datasheet
/ For Q-switching of lasers without use of phase retardation plate
/ Different versions tailored for specific applications
/ For Q-switching of lasers without use of phase retardation plate
/ Different versions tailored for specific applications
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Drivers PCD-N-2 and PCD-N-3 are designed for Q-switching of nanosecond lasers without use of phase retardation plate. High voltage is applied to Pockels cell in order to inhibit oscillation. Pockels cell is opened by negative polarity pulse allowing laser to radiate. Driver need for external HV power supply, HV05Wm is suitable.
Drivers PCD-N-3D and PCD-N-3B is integrated with ±4 kV HV power supply. Voltage control is done using CAN interface. EKSPLA suggest CAN-USB converter with Can browser software for Windows® operating system. Can browser can be kept disconnected after proper voltage value was set.
Drivers PCD-N-2D and PCD-N-3D are designed for operation with DKDP crystals, drivers PCD-N-2B and PCD-N-3B – for BBO.
Specifications
| Model | PCD-N-2D | PCD-N-2B | PCD-N-3D | PCD-N-3B |
|---|---|---|---|---|
| Maximum high voltage to cell (HV) pulse amplitude (U1 + U2) | 5 kV | 8 kV | ||
| U1 value (Fig. 3) | equal to HV powering voltage | equal to HV powering voltage | ||
| U2 value (Fig. 3) | equal to 0.25xU1 | 0 V | equal to 0.25xU1 | 0 V |
| HV pulse 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 requirement | 100 - 1200 µs | 120 - 700 µs | ||
| External triggering pulse amplitude requirement | 3 - 5 V (50 Ω) | 3.5 - 5 V (50 Ω) | ||
| External triggering pulse rise & fall time | < 20 ns | < 20 ns | ||
| Board dimensions | 92 x 70 x 22 mm * | 92 x 70 x 22 mm * | ||
| Ø3.2 mm mounting holes location | 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.
Specifications are subject to changes without advance notice.
Fig. 3. Control time diagram of PCD-N series drivers