Digital laser frequency and intensity stabilization based on the STEMlab platform (originally Red Pitaya)

Preuschoff, Tilman; Schlosser, Malte; Birkl, G.

doi:10.1063/5.0009524

Cited by 20 publications

(6 citation statements)

References 9 publications

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“…The laser frequency was stably locked for more than one day. The beat signal between two independent lasers has a frequency drift of 716 KHz at 5000 s. The result shows that the fractional frequency instability of the locked laser falls bellow 5 × 10 -11 at 1000 s averaging time [32].…”

Section: Research Advancesmentioning

confidence: 89%

The application and development of laser frequency stabilization techniques for atomic clocks

Liu,

Guo,

Liu

et al. 2023

6th Optics Young Scientist Summit (OYSS 2023)

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Atomic clocks are precise devices that generate time and frequency signals by exploiting the inherent oscillation frequency of atoms. They have broad applications in fields such as aerospace navigation, global positioning, and precision metrology. Laser frequency stabilization techniques are crucial for ensuring the stable operation of atomic clocks, laser frequency stability directly impacts the performance of these clocks. This review presents the working principles, characteristics, and research progress of different laser frequency stabilization techniques, including saturation absorption spectroscopy stabilization, Pound-Drever-Hall technique, and modulation transfer spectroscopy stabilization. Additionally, it provides a perspective on the future advancement of laser frequency stabilization techniques in the atomic clock filed, which integral in the development of high-performance atomic clocks.

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Section: Research Advancesmentioning

confidence: 89%

The application and development of laser frequency stabilization techniques for atomic clocks

Liu,

Guo,

Liu

et al. 2023

6th Optics Young Scientist Summit (OYSS 2023)

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“…Our data acquisition system is based on software-defined radio receiver SDRlab 122-16 by Red Pitaya (Fig. 1a) [28][29][30]. (For some specific applications, we replace this receiver with a digital oscilloscope.)…”

Section: Methodsmentioning

confidence: 99%

A versatile, phase coherent data acquisition system based on software-defined radio for graphene nanomechanics

Moser¹,

Zhang²,

Zhang³

et al. 2023

Preprint

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Software-defined radios (SDRs) are radio frequency transceivers in which an important part of signal processing is performed digitally using vast libraries of open-source software. Here, we assemble a simple data acquisition system whose architecture, based on SDR, allows us to design a comprehensive suite of tools to study the vibrations of a few-layer graphene nanomechanical resonator. Namely, we measure the cross-spectrum of vibrations in frequency domain, we measure their energy decay rate in time domain, we perform vector measurements of their in-phase and quadrature components, and we control their phase using a time-dependent strain field --all with a single measurement platform. Finally, we drive vibrations with a modulated signal output by a SDR transmitter and demodulate the response with a SDR receiver in the form of a video. Our approach allows us to tailor our experiments at will and gives us control over every stage of data processing. Overall, our versatile system enables measuring a wide range of nanomechanical properties of graphene by customizing the signal acquisition and replacing some analog electrical circuits, such as filters, mixers, modulators and demodulators, by blocks of code.

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“…In the first stage, an intermediate-bandwidth frequency lock is implemented using the digital proportional-integral controller based on the STEMlab platform and the locking scheme both described in our previous work. [16] The modulation input of the current driver is used as a servo input. The second stage (phase lock) defines the phase noise performance of the OPLL, thus requiring a large bandwidth.…”

Section: Application: Optical Phase Lock Of Two Diode Laser Systemsmentioning

confidence: 99%

Wideband current modulation of diode lasers for frequency stabilization

Preuschoff,

Baus,

Schlosser

et al. 2022

Preprint

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We present a current-modulation technique for diode-laser systems that is specifically designed for high-bandwidth laser-frequency stabilization and wideband frequency modulation with a flat transfer function. It consists of a dedicated current source and an impedance-matching circuit both placed close to the laser diode. The transfer behaviour of the system is analysed under realistic conditions employing an external-cavity diode laser (ECDL) system. We achieve a phase lag smaller than 90°up to 25 MHz and a gain flatness of ±3 dB in the frequency range of DC to 100 MHz while the passive stability of the laser system is not impaired. The potential of the current modulation scheme is demonstrated in an optical phase-locked loop between two ECDL systems with phase noise of 42 mradrms. Details on the electronic layout and the printed circuit board design are available as open-source project at https://github.com/TU-Darmstadt-APQ/Laser Backplane DVI.

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Digital laser frequency and intensity stabilization based on the STEMlab platform (originally Red Pitaya)

Cited by 20 publications

References 9 publications

The application and development of laser frequency stabilization techniques for atomic clocks

The application and development of laser frequency stabilization techniques for atomic clocks

A versatile, phase coherent data acquisition system based on software-defined radio for graphene nanomechanics

Wideband current modulation of diode lasers for frequency stabilization

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