HVSW-04 High-Voltage High-Repetition-Rate Pockels Cell Drivers HVSW-04-2kV-WR
HVSW-04 is a dedicated high-voltage, high-repetition-rate Pockels cell driver for picosecond and femtosecond lasers, primarily for extracting individual pulses from a pulse train. The driver offers two operating modes. Modified versions also provide continuously adjustable pulse width over 15-2000ns. It requires a +24 V DC supply, a pulse generator to set operating frequency and pulse width in variable-width mode, and a bipolar HV DC supply such as HVPS-300. The user sets output voltage through the high-voltage DC supply interface. Maximum output voltage is 4 kV bipolar; maximum repetition rate is 0.5-4 MHz depending on output voltage. Operating modes: fixed-width short pulses of approximately 15-20 ns, triggered by the leading edge of an external TTL signal; variable-width long pulses, normally adjustable over 100-2000 ns with other ranges available on request, where the external TTL leading edge raises the pulse and its trailing edge lowers it. Original target-performance table: Output voltage, kV | repetition rate, MHz (*) | power consumption, W. 4.0 | 0.5 | < 300; 3.2 | 1 | < 400; 2.0 | 2 | < 300; 1.6 | 3 | < 300; 1.4 | 4 | < 350. (*) Values are approximate; actual performance depends on load capacitance and cooling. Bipolar output pulse voltage U is formed by applying +U/2 to one output wire and –U/2 to the other. Both output poles are therefore below HV. The water-cooled driver is controlled through either an analog interface or RS-485, not simultaneously. PC software is available for laboratory use. Common models (original table): HVSW-04 or HVSW-04-4kV | output voltage up to 4.0kV; repetition rate up to 1MHz at 3.2kV; rise/fall time 9-11ns at 4kV; short pulses 15-20ns fixed and long pulses 100-2000ns adjustable; the 20-100ns range is unavailable. HVSW-04-2kV | output voltage up to 2.0kV; repetition rate up to 4MHz at 1.6kV; rise/fall time 7-9 ns at 2kV; short pulses 15-20ns fixed and long pulses 100-2000ns adjustable; the 20-100ns range is unavailable. HVSW-04-4kV-WR (wide range) | output voltage up to 4.0kV; repetition rate up to 1MHz at 3.2kV; rise/fall time 9-11ns at 4kV; continuously adjustable pulse width over 15-2000ns. HVSW-04-2kV-WR (wide range) | output voltage up to 2.0kV; repetition rate up to 4MHz at 1.6kV; rise/fall time 7-9ns at 2kV; continuously adjustable pulse width over 15-2000ns.
Overview
Specifications
| Parameter | Value |
|---|---|
| Low-Voltage Input | +24VDC, maximum 2.5A |
| High-Voltage Input | +HV/2 on one wire; -HV/2 on the other wire |
| Output Type | Bipolar |
| Pulse Amplitude | Adjustable , up to 4kV |
| Voltage Baseline | Fixed, 0 V |
| Maximum Repetition Rate | up to 4MHz |
| Minimum Repetition Rate | Single shot |
| Pulse Width - Fixed Pulse Width Mode - Variable Pulse Width Mode | 15-20ns, fixed; 15-2000ns or 100-2000ns, adjustable |
| Pulse Interval | >50ns |
| Rise/Fall Time | From 5-7ns at an output voltage of ~1kV to 9-11ns at maximum. Voltage (4kV) |
| Delay Time | <50ns |
| Jitter | <0.5ns (±250ps) |
| Load Capacitance | typical:typical 5-7 pF |
| Operating Temperature | +10~+40℃ |
| Storage Temperature | -20~+60℃ |
| Humidity [Non-condensing] | 0~90%, non-condensing |
| Protection | - Ultralong pulse adjustable within 200ns-2200ns (threshold); - Overtemperature protection |
| Dimensions | 176 mm × 69 mm × 50 mm |
| Weight | <0.5kg |
Applications
Key Features
Datasheet
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