Key Contacts

Philip Marlowe

Product Manager - Electro Optics and Waveplates

Tel: +1 216 486 6100 (Ext: 3154)

Brent Gross

Product Management Director - Electro Optics and Waveplates

Tel: +1 216 486 6100 (Ext: 3153)

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Pockels Cell Drivers. Left -the R-Drive, Right -the Q-Drive. Q-Switch pockel cell drivers and regenerative amplifiers.

Pockels Cell Drivers

Gooch & Housego has developed Pockel Cell Drivers to complement its range of Pockels Cells. High quality components are integrated into our designs to maximize lifetime, safety, and reliability. Our Pockels cell drivers are available in several configurations: benchtop drivers, integrated systems, or OEM versions. Drivers have been developed for commercial, military, and scientific Q-switched laser systems as well as regenerative amplifiers for ultrafast laser pulse selection.
When selecting a Pockels cell driver, it is important to know the required switching voltage, as it is typically higher for BBO than KD*P, and half-wave operation requires twice the voltage of quarter-wave. Our compact line of drivers achieve high typical switching voltages by applying opposing voltages to each lead (i.e., a high differential voltage). Switching speed and repetition rate also determine choice of driver.

Q-Drive™ for Q-switched lasers

G&H’s signature Pockels cell driver, the Q-Drive™, was developed with a differential output eliminating high DC voltages relative to ground at the Pockels cell. The Q-Drive™ insulation stress and stray capacitance effects are minimized while maximizing safety and reliability. The Q-Drive™ series offers a fast rise-time for KD*P Pockels cells used in Q-switched lasers with modest repetition rates. It has been designed for high noise immunity and optimum signal integrity. The Q-Drive™ is available in laboratory and OEM configurations. 
A remote control connector allows convenient single-point access to all driver functions, with remote high voltage (HV) control and signal monitoring. The compact size of the G&H Q-Drive™ allows for placement near the Pockels cell to minimize the output pulse rise time. The OEM model takes up even less volume, with nominal dimensions of only 8 cm by 10 cm and 2.5 cm high. Moreover, we can customize the board to allow its incorporation in unique system designs.

R100™ for regenerative amplifiers

The compact, cost-effective R100™ is designed specifically for use with BBO Pockels cells at quarter wave voltage. Offering both a fast rise and fall time, it allows laser pulses to be injected into or coupled out of an amplifier cavity quickly. Ideal for pulse selection and ultrafast laser regenerative amplifier designs up to 200 kHz, it can be incorporated into new systems or retrofitted as an upgrade to existing designs.

HVR-Drive™ for regenerative amplifiers

The HVR-Drive™ is an extension of the R100™ product family with voltage capability up to 7.5 kV at repetition rates of up to 200 kHz. The fast rising and falling edges of its top-hat waveform makes the HVR appropriate for use with BBO Pockels cells operating at quarter-wave voltage in ultrafast regenerative amplifiers, as well as with KD*P Pockels cells at half-wave voltage. The HVR-Drive™ owes its compact footprint and excellent heat load characteristics to the fact it requires external power supplies and control electronics. Appropriate power supplies and control electronics can be recommended, offered as options, or included as part of an HVR-System™.

HVR-System™ complete solution

The HVR-System™ is a turnkey, front-panel controlled, rack-mounted Pockels cell driver system capable of operation to 7.5 kV and 200 kHz repetition rate. The HVR-System™ includes a driver, power supplies, and control electronics – enabling out of the box functionality for prototyping and laboratory based studies over a range of operational regimes. It also features a front panel digital voltmeter, high voltage enable/disable and trigger on/off switches for ease of use. G&H offers a number of standard HVR-System™ configurations and custom configurations for specific requirements.

OEM Customization

G&H Pockels cell drivers may be customized for each application, from wiring and signal interfaces to cooling by air, water, or conduction/convection. Options for enhanced reliability include complex voltage traces for the Q-Drive™ to avoid crystal degradation, and custom triggering logic with precisely controlled delays for the R100™ MOSFETs to prevent damage in operation. All OEM designs are built to the desired form factor and mounting requirements.

Applications of Pockels Cells Drivers

Q-switching, regenerative amplifiers, laser pulse selection and management.

ProductRise / Fall TimeVoltage OutputRepetition RateApplication