Products

What we make

Digital acquisition and processing, analog front ends and photodetection, and optics.

01 Digital and mixed-signal

One configurable acquisition and processing board

One FPGA board with a compute module, configured as a digitiser, a waveform generator or digital I/O.

Digitiser

Up to 16 ch · up to 16-bit · up to 500 MSa/s · 80 MHz bandwidth

Precision set: 8 ch · 18-bit · 2 MSa/s · simultaneous sampling

Streaming and triggered capture, with filtering and decimation on the board.

The 18-bit precision set sits alongside the fast channels rather than instead of them, for signals that need resolution rather than rate. As an example of the fast path, the gamma-ray configuration runs pulse-height analysis on the board: a trapezoidal filter with rise time k and flat top m set in firmware, then peak detection and data analysis in programmable logic, at 14-bit and 100 MSa/s with no analog shaping amplifier in the chain.

Lock-in amplifier

Sensitivity: pA current · nV voltage

>120 dB dynamic range · 10 MHz or 300 kHz bandwidth

A digital lock-in: phase-sensitive detection of a modulated signal against a reference, with the output low-pass filtered.

Time-to-digital converter

Up to 20 ps timing resolution

Event timing and coincidence measurement, sharing the clock and trigger network with every other channel on the board.

Arbitrary waveform generator

4 ch · up to 16-bit · up to 500 MSa/s

Stimulus and calibration waveforms, with outputs phase-locked across boards.

Inference engine

In design

Pulse-shape classification and background rejection in logic, applied to samples before they leave the board.

Compute node

In design

Data carried between boards over the existing high-speed links, so an adjacent board adds processing rather than only channels.

02 Analog

Front-end blocks for low-level measurement

Amplification and photodetection built as separate blocks, so they can be combined for a given measurement rather than bought as a fixed instrument.

Photodetectors, single and balanced

Si PIN diodes · 320 to 1,000 nm · 1 MHz bandwidth

Gain: 10⁵ V/A fixed, or 5×10² to 10⁵ V/A variable

Silicon PIN photodiodes into a transimpedance stage, in single and balanced configurations.

Balanced puts two matched diodes into a difference amplifier, for measurements where the signal is the imbalance between two beams rather than the intensity of either. Single is a direct intensity measurement, where there is no reference arm to subtract. The variable gain version trades bandwidth against sensitivity across decades, so one detector covers an alignment scan at high optical power and the measurement that follows at low.

Voltage preamplifier, fixed gain

Fixed gain: 5×10², 10³, 10⁴ or 10⁵ · DC to 10 MHz

Built at one gain, specified at order rather than switched in use, so the transfer function is a single constant with nothing in the signal path to change it.

Current preamplifier, fixed gain

Fixed gain: 5×10², 10³, 10⁴ or 10⁵ V/A · DC to 10 MHz

Transimpedance conversion at one gain, specified at order rather than switched in use, for detector and photodiode currents where the range is known in advance.

Voltage preamplifier, programmable gain

In design

1 mV to 12 V · ≤2.5 nV/√Hz · DC to 10 MHz

Programmable gain on a single-ended or differential input, with the range set in software rather than by a front-panel switch.

Current preamplifier, programmable gain

In design

25 pA to 1 mA · ≤3 fA/√Hz · DC to 10 MHz

Transimpedance conversion for photodiode and detector currents, with the feedback element selected per range.

03 Optics

TPX optics for the terahertz band

Aspheric lenses and windows in a material that transmits across the band with low absorption and low dispersion.

Aspheric TPX lenses

Plano-convex · 10, 32.5 and 50 mm focal lengths · 1″ and 2″

For the terahertz band, where TPX transmits with low absorption and low dispersion.

TPX windows

1 to 5 mm thickness · 1″ and 2″

Vacuum and purge-box windows for beam paths that have to stay sealed without costing transmission.

Custom optics

Focal length, diameter and thickness to order

Anything outside the catalogue is a turning and polishing job rather than a development project. Send the geometry and the band.