HF-DR – Radio Frequency Generators for Ion Traps

Our high-frequency trapping field generators create large sinusoidal voltages with an unprecedented amplitude stability down to 12 ppm per minute.

Typically, such a state-of-the-art specification would only be achieved through complex in-house development by well-equipped research facilities. RF drives have evolved and proven up to the task in many demanding research projects with top research institutes worldwide.

Paul quadropole ion traps (e.g. Yb+, Ca+, Be+) and radio frequency quadrupoles (RFQ) benefit from both, the outstanding performance and the ease of use of our solution. Typical applications comprise general ion trapping experiments, quantum computing, and mass filters. For some models, a fast-turn-off option for swift ion ejection is available (’kill-switch’).

Unlike with common power RF generators, here, the outputs are capable to drive purely capacitive loads, like electrodes of ion traps or quadrupole structures.

The base model HF-DR is internally equipped with a resonator to achieve higher voltage amplitudes at a narrower frequency band. See variant model HF-DRB for a non-resonant broadband version.

Key Features
Ultra precise amplitude, stable on 1×10-5 level, for outstanding ion coherence in ion clocks, quantum computing, etc.
USB remote control
Fast shut-off-option for ion ejection (<< 1 μs)
f = 1.0 to 6.5 MHz, up to 1800 Vpp differentially (optionally up to 40 MHz)

Model HF-DRB

The variant version HF-DRB features a non-resonant broadband design with fast-turn-on/off capability in order to, for example, capture ions in flight or supply miniaturised mass spectrometers.

Key Features
RF drive amplifier for ion traps/quadrupoles
Up to 600 Vpp into 100 pF load
f = 10 kHz to approx. 1.5 MHz depending on customisation
Non-resonant broadband design
Tips and tricks

1. Improve response time and communication latency of the device
Try setting the latency timer of USB driver to 1 ms (default: 16 ms). See these instructions (pdf).

Typical RF drive application: supply of Paul traps or RF ion guides. The twin output doubles the effective voltage due to the 180° phase shift.

Block diagram of the internal structure of HF-DR devices.

LCD display of HF-DR devices

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