The core of our pockels cell driver heads are high performance solid state switches. Where to buy pockels cell drivers, pc driver, electronic, applications. This equipment produces high voltages that can be very dangerous. The microwave tube is controlled, through its grid voltage, by two pulse amplifiers each having a plurality of tandem field effect transistor fet stages so as to increase the voltage across the cell in two steps having a selected delay therebetween. Dpsdpdfam fast amplitude modulation series drivers are designed to shape every single laser pulse or pulse train by adjusting the amplitude to a specific userdefined level while controlling the operation of a pockels cell in a laser system. A high voltage offset can degrade the pockels cell over time. There may be a control knob for adjusting the amplification, e. Because of advanced cooling it can be run with the repetition rate up to 500 khz.
Based on executed mathematical transforms, directions of improvement ways for typical engineering solutions are analyzed. The photograph has been kindly provided by ekspla an important property of a pockels cell is the halfwave voltage u. Amis oem drivers offer reliable, high voltage pulsing in compact surface mount modules. Single mosfet connection is considered by using laplace transformation. Depending on the application, the requirements on the driver. The voltage is up to 10kv, the repetition rate is up to 200khz and the rising timefalling time is. With the driver input at 0v and the voltage offset at 0v, rotate the pockels cell around its optical axis until the transmitted power is at its minimum. A pockels cell driver using a microwave triode which transfers charge from a high voltage source to a pockels cell via a storage capacitor. However, the relatively low voltage requirements of the transverse field rtp pockels cell allow leysop to switch the high voltage at high repetition rates with acceptable power consumption at the driver.
When used in conjunction with polarizers, these cells can function as optical switches, or laser qswitches. The, high voltage power supply requirements needed to drive a given load at a specific voltage and, for pulsing or gating power tube grids, pockels cells and q switches, acoustic transducers, the pvm4140 is a compact, oemstyle pulse generator module producing fast, high voltage wave forms to 3,000v. Analysis of an ultrafast mosfet based pockels cell driver. Simple pockels cell drivers simply accept an analog input signal of moderate voltage, amplify it proportionally and send it to the cell. Hvsw04 high voltage high repetition rate pockels cell driver. The module as shown in figure 6, has been developed to safely and reliably provide the high voltage switching required to drive the latest pocke1s cells. Pockels cells need to be operated with high voltages, delivered with a suitable pockels cell driver. Fast high voltage switch with the transition time of 57 nsec.
Notes on the use of kentech instruments ltd high voltage pockels cell driver october 2008 kentech instruments ltd. The company integrates its eo crystal devices with its high voltage, nanosecond switching time electronic drivers to provide convenient, highly reliable optical switching systems for regenerative amplifiers. Key advantages of pockels cell drivers based on fid technology. Rp photonics encyclopedia pockels cell drivers, required. Eksma optics offers high voltage drivers with operating voltage up to 9. All driver heads are emc tested to suite medical applications as well as research applications. Analysis of fast mosfet based high voltage switch for high voltage electrooptic. Our pockels cell drivers utilize solidstate mosfet technology which provides excellent trigger noise immunity and a smooth output waveform. Rpmc lasers offers a wide range of pockels cell drivers for highspeed electro optic. Featuring a differential output that eliminates high dc voltages relative to ground at the pockels cell, the qdrive minimizes insulation stress and stray capacitance. Amplitude is continuously variable by adjusting the internal high voltage power supply. High voltage marx generator pockels cell laser qswitch.
A marx generator generates a highvoltage pulse by charging a number of capacitors in parallel, then suddenly connecting them in series. Pockels cell drivers with high voltage pulse source. This is the voltage required for inducing a phase change of. These drivers include an internal high voltage power supply and provide a monitor to observe the high voltage output amplitude prior to the pulse. Pockels cell driver q switch driver solid state laser.
Highland technology of san francisco has released the model t850 driver for pockels cell optical modulators. Fdg pulsers for high capacitance pockels cells, including cells with. Qswitch driver, electrooptics, pockels cell, high voltage switch. One of the most difficult aspects in dealing with electrooptic devices is the problem of working with high voltages. Leysop developed the driver with the application of continuously pumped sources in mind. Hvsw03 high voltage high repetition rate pockels cell. The majority of electrooptic devices present a capacitive load to the driver which further compounds the problem of finding a suitable driver. Pockels cells devices are fabricated from kdp dkdp, rtp and bbo. This technique eliminates common problems associated with krytron, avalanche, and transformer drivers because the amplitude is continuously variable by adjusting the internal high voltage power supply. This oscilloscope trace shows the measurement of the optical transmission of a tx5065 pockels cell in a singlepass setup measured with a photodiode of risetime 1nsec. Hvsw04 is a specialized pockels cell driver which performance is optimized for pico and femtosecond lasers.
A high voltage switch for discharging a storage capacitor to increase the voltage across a pockels cell includes a plurality of semiconductor devices conducted in series with the pockels cell and the capacitor, each of the semiconductor devices having a control input. Fdmk compact pockels cell drivers with improved contrast. High voltage drivers with fast amplitude modulation fam are designed to form laser pulse trains or even single laser pulses with specific userdefined amplitude levels by controlling the operation of a pockels cell in the laser system. Fastpulse technology kdp, pockels cell, pockels cell. High voltage pockels cell driver china manufacturers. High quality components are integrated into our designs to maximize. Rp photonics encyclopedia pockels cells, electrooptic. The model 8251 solidstate pockels cell driver provides continuous highvoltage pulses for applications such as controlled qswitching of solidstate lasers. Fdg pulsers for high capacitance pockels cells, including cells with plasma electrodes. The model 8212a1 pockels cell shutter driver is designed for pulsed applications. Dpb high voltage pockels cell driver features hv pulse amplitude up to 6 kv.
The 825b is capable of operating at high pulse repetition frequencies, fast rise times and fall times, and output pulses up to 3. The 10 kv pockels cell driver is eosos latest development in high voltage, high frequency and fast switching power supplies. The 10 kv pocke1s cell driver is eosos latest development in high voltage, high frequency and fast switching power supplies. Analysis of fast mosfet based high voltage switch for high voltage electrooptic devices is presented. Dpb high voltage pockels cell driver can be easily integrated with hv power supply. Drivers are designed for variations of output voltage, repetition rate and. The model 8212a1 has a variable pulse width output with rise and fall times of drivers include an internal high voltage power supply and provide a monitor to observe the high voltage output amplitude prior to the pulse. The pockels effect explains the behavior of the pockels cell. The pockels cell driver is of pushpull type allowing ontimes of any length. Improvement directions including fastest operation, optical losses minimization, optical behaviors. Applying a constant voltage allows the pockels cell to operate as a voltagecontrolled wave. Pockels cell concepts scanimage 2016 vidrio technologies. A pockels cell based on kd p, which can be used for q switching of solidstate lasers. The qdrive insulation stress and stray capacitance effects are minimized while maximizing safety and reliability.
High voltage power supply ps4012 for pockels cell drivers. This module was made for use in a continuum surelite yag laser system where it generated short 3kv pulses to drive the pockels cell qswitch. Please read user manual before starting operations. The core of our pockels cell driver heads are high performance solid state. Pockels cell driver shutter driver high voltage driver. A pockels cell alters the polarization state of light passing through it when an applied voltage induces birefringence changes in an electrooptic crystal such as kdp and bbo. T850 incorporates a new architecture that greatly increases electrical efficiency and reduces driver size and cooling requirements, according to the firm. Its small size and very low power requirements allow it to be mounted immediately adjacent to the pockels cell in an optical system. Fast highvoltage psu for pockels cells electronics weekly. Rpmc lasers offers a wide range of pockels cell drivers for highspeed electrooptic. They are available in one of our standard housing as well as in any specifically designed housing which suits your specific needs. Eksma optics uses cookies to give you the best shopping experience. Pockels cell drivers with integrated high voltage up to 5800 v pulse source.
Pockels cell driver stapcd1 has been designed for cavity dumping and qswitching of solidstate lasers equipped with electrooptical qswitches based on bbo or dkdp crystals. Pockels cell driver shutter driver high voltage driver ami. Offer driver board, pockels cell driver, pockels cell from. The modified version stapcd2 provides unipolar output and may be used with qswitches and modulators based on. Pockels cells are fast high voltage devices with a capacitive load characteristics. Amis pockels cell drivers meet the stringent reliability requirements for medical and industrial applications. If you continue to use our services, we will assume that you agree to the use of such cookies.