Components

BEECH

Compact frequency stabilisation unit with ultra low long-term drift

Reliable and accurate frequency stabilisation of lasers is key for quantum optics and quantum information experiments with trapped ions or atoms. BEECH offers frequency stabilisation of 4 key wavelengths for trapping 40Ca+ in a single 4 RU, 19-inch rack module. Ultra low drift rates and full remote control ensure high reproducibility with minimum effort.

typically below 25kHz

Linear drift per day

4 RU

19-inch rack mountable module

4

Key wavelengths for 40Ca+ trapping

BEECH
BEECH

Frequency stabilisation of lasers can take a significant amount of work and space in the lab.

Stabilisation of up to four key experimental wavelengths for 40Ca+ trapping

Frequency stabilisation of lasers at vastly different wavelengths may generate a lot of overhead in space and effort. Our compact BEECH simultaneously stabilises lasers at 397 nm, 423 nm, 854 nm and 866 nm wavelenths for 40Ca+ trapping.

Low linear drift rate of below 25 kHz per day

The ultra low linear drift of BEECH guarantees constant performance of your experiment and reduces calibration overhead

Drift rate
Drift rate

Linear drift of 100(28) Hz/h measured over >100 hours

Web user interface

Full remote contol over lock parameters via web user interface. Lock status via API.

Web user interface

BEECH is a rack compatible laser frequency stabilisation module for up to 4 different wavelengths, using fully digital PID signal processing. With its compact 4RU 19-inch rack form factor, ultra low frequency drift rates and full remote operation it enables high reproducibility of experimental results with low overhead in space and effort.

BEECH is based on a transfer lock with a proprietary cavity design, thus combining the excellent long term stability of an atomic resonance with the flexibility and short term stability provided by high bandwidth PDH stabilization to an optical cavity.

It features fiber coupled input ports and a fiber coupled optical reference output at 335.111370 THz for calibration of external devices.
Information on a BEECH version for Sr neutral atoms is available on request.

Specifications
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Wavelength 1 input 397nm, 250µW
Wavelength 2 input 423nm, 175µW
Wavelength 3 input 854nm, 110µW
Wavelength 4 input 866nm, 90µW
Reference output 335.111370THz, 100µW
Dimensions 482 x 177 x 582mm (4RU)
Long term drift <9MHz/year
PID Bandwidth 1 MHz

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