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HVSW-04 Pockels cell driver
Applications
- Pulse picking
- Cavity dumping
- Regenerative amplifier control
Features
- Up to 4.0 kV output voltage
- Up to 4 MHz repetition rate (at 1.4 kV voltage)
- Up to 1 MHz repetition rate (at 3.2 kV voltage)
- 5-11 ns rise / fall time
- Requires external HV power supply
(e.g. HVPS-300) - Two possible operating modes for base model: short pulse (15-20 ns, fixed width) and long pulse (100-2000 ns, adjustable width)
15-2000 ns pulses for wide range modification
Download manual (1.3 MB)The HVSW-04 pulse picker is a dedicated high-voltage high-repetition-rate Pockels cell driver optimized for pico- and femtosecond lasers. It consists of two high-speed MOSFET-based drivers in a full-bridge configuration. Its primary applications include extracting single pulses from a pulse train, pulse picking, and regenerative amplifier control.
The pulse picker driver supports two operation modes:
- fixed-width short pulses (typically 15-20 ns), triggered by the leading edge of an external TTL signal.
- variable-width long pulses (adjustable in the 100-2000 ns range; other durations available on request), when the leading edge of the external TTL signal initiates the pulse and the trailing edge terminates it.
We also offer a wide-range driver modification with continuously adjustable pulse width from 15 to 2000 ns.
The driver requires +24 V DC power supply, a pulse generator to set an operating frequency and pulse width (in variable pulse width mode) and a bipolar high-voltage DC power supply (e.g., HVPS-300). An output voltage level is defined by user using the HV DC power supply interface.
The maximum output voltage is 4 kV (bipolar), maximum repetition rate is 0.5-4 MHz (in dependence on output voltage, some target performances are provided in the following table):
(*)The performance values are approximate; exact results depend on the actual load capacitance and cooling conditions.
Please, note that by bipolar device an output pulse voltage U is formed by applying +U/2 to one output wire and –U/2 to other. As a result, both output poles are at high voltage.
The driver is water-cooled.
It is possible to control the driver via either an analogue interface or via RS-485 (not simultaneously!). PC software is provided for laboratory use and configuration.
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