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Phase Shift Controllers

Durango Interferometry Software typically provides phase shifting by controlling the analog voltage applied to a PZT phase shifter. Diffraction International phase shifters are low voltage devices that shift nominally 4.7 fringes at +10 V for 633 nm wavelength. This is the typical voltage range of digital-to-analog devices that can be installed in or connected to a desktop or laptop computer.

Many interferometers require a phase shift voltage in the range 100 V to 1000 V. This will require a voltage amplifier between the controller device and the phase shifter. Diffraction International phase shifters will require a voltage amplifier when used with interferometers operating at mid-IR or LWIR wavelengths.

Durango can control wavelength shifting interferometers, usually by means of an analog current. Diffraction International has also developed custom software modules that enable Durango to control a number of other phase shifting and wavelength shifting devices.

Phase Shift Controllers
Device Form Factor I/O Connector Adapter
to LEMO
Volts Out Current Out Resolution Update Rate
*LEMO connector added by Diffraction International
NI PCIe-6321 PCI Express 68-pin VHDCI   ±10 V 5 mA 16 bits 900 kS/s
NI PCI-6221 PCI 37-pin D-SUB   ±10 V 5 mA 16 bits 900 kS/s
NI PCI-6024E PCI 68-pin SCSI-II   ±10 V 5 mA 12 bits 10 kS/s
NI USB-6211 USB LEMO*   ±10 V 2 mA 16 bits 250 kS/s
NI DAQCard-6024E PCMCIA 68-pin VHDCI   ±10 V 5 mA 12 bits 1 kS/s
NI PCIe-6321 thumbnail

NI PCIe-6321

Includes 68 pin VHDCI to LEMO adapter, added by Diffraction International.

NI PCI-6221 thumbnail

NI PCI-6221

Includes 37 pin to LEMO adapter, added by Diffraction International.

NI PCI-6024E thumbnail

NI PCI-6024E

Information currently unavailable

NIDAQ USB-6211 thumbnail

NIDAQ USB 6211

low voltage PZT controller, modified by Diffraction International to include LEMO connector.

National Instruments DAQCard 6024E

DAQCard 6024E

National Instruments DAQCard 6024E provides PZT control to laptops.

Physik Instrumente low voltage PZT amplifier.

PZT Amplifier

Low voltage PZT amplifier transforms 0 to 10V control signal to 5 to 100V output. Similar high voltage amplifier provides 10 to -1000 V output.

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Page updated: 17 October 2014

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