Cells can be supplied fluid filled for low loss or dry for the highest optical power handling. There are three basic systems: This driver is extremely useful in regenerative amplifier laser setups where single or multiple pulses are seeded in the laser cavity. These are effectively back-to-back Pockels cells which can then be driven independently to turn on and off the transmission of the optical beam with great precision and flexibility. Supplied as an OEM format cell in an industry standard package, a kHz driver is also available. Whilst extremely effective devices, there are some applications where transverse field devices are superior choices.
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Our technical expertise is by no means limited to this list of products. Consequently in order to pick out a single pulse an extra cavity system can be used with a pulse that goes from zero to the half wave voltage and back to zero in the two round trip times of the cavity. Please note that Kentech do not make pockels cells, but can supply them with systems or advise on type suitablility.
More complex arrangements may be necessary for regenerative amplifiers where the laser has to be seeded, possibly from a mode locked train so pulse picking may be needed. We can build suitable pulsers for this type of work. The results in a narrower pulse without the inefficiency of csll chopping. rzte
Pulse picker or Pockels cell to control the polarization
The pulse picker consists of the pockels cell, high voltage driver, synchronization and delay generator. Pockels cells are used for many applications mainly within laser systems. For various reasons see belowit is often necessary to pick certain pulses from such a pulse train, i.
If a short gate drive is used the timing becomes more critical and it will be necessary to synchronise the driver to the RF drive to the cavity as well as to the peak of the mode locked train for a “Q” switched mode locked system. Extra cavity pulse chopping is not nearly as efficient as pocksls pulse shaping or pulse compression by, for example, Brillouin back scatter.
The amplifier will then act only on the wanted pulses. Also please send me a price list with if any possible discount in your earliest convenient time.
If you have an inquiry on this topic, please contact QTI toll-free at or tate an e-mail to staff quantumtech. Choose product Send request for custom product. Cells are supplied dry with AR coating for maximum optical tep handling and are offered for the wavelength range nm. The principle of an acousto-optic pulse picker is to apply a short RF pulse to the acousto-optic modulator so as to deflect the wanted pulse into a slightly modified direction.
DQ High Repetition Rate Pockels Cell Driver for Q-Switching
Components of a standard pulse picker: The voltage required is proportional to the wavelength. Typical pulses in mode locked trains are 7 to 12 ns apart depending upon the length of the mode locked cavity in use.
The high voltage and fast risetime of our technology makes the pulsers suitable for a variety of applications: External high-frequency or optical reference High-voltage pulse with adjustable delay High-voltage pulse with adjustable amplitude Two additional sync channels High contrast Low jitter Applications – Pulse selection – Pulse Slicing – Q-switching.
The cell will change the state of polarisation of the laser light and when combined with a polariser will permit the opening or closing of a cavity or cavity dumping or pocjels. If you don’t see anything which meets your needs, give us a call.
DQ Series high repetition rate Pockels cell driver has been designed for use in mode-locked lasers for cavity dumping or for ceol Q-switching of solid-state nanosecond lasers. A pulse picker is in most cases either an electro-optic modulator or an acousto-optic modulatorcombined with a suitable electronic driver. Separate drivers allow the generation of fast edges for both turn on and turn off of the cell.
Quantum designs many other devices and systems, both standard and custom made. A pulse picker can be used for injection and extraction of pulses in a regenerative amplifier. Could you send me your product info for my experiment?
Pockels Cells | Gooch & Housego
Although pulses in mode locked trains are typically sub ps the gate used for pulse picking is generally nearer the two round rrep times. Low voltage power supply is required to internal triggering circuit, while tuning of HV power supply voltage. The electronic driver of a pulse picker may fulfill additional functions.
Apertures range from 8mm to 20mm and cells can be configured with either 1, 2 or 4 terminals depending on your interconnection requirements. The price of a driver scales like the peak power voltage squaredthe repetition rate and the reciprocal of the risetime. If you continue to use our services, we will assume that you agree to the use of such cookies.
However, in simpler systems that just apply a voltage and then remove it, the fast removal can result in strain and the cell may not return to its quiescent state for some time, related to acoustic time scales.