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High power ultrafast phase-locked laser at 2060 nm from a doubly resonant optical parametric oscillator [PDF]

open access: yesScientific Reports
A high-power 2- $$\mu$$ m phase-locked femtosecond source is demonstrated by a degenerate doubly resonant optical parametric oscillator (DROPO), which is synchronously pumped by a home-built Yb:YAG Kerr-lens mode-locked thin-disk laser.
Han Rao   +6 more
doaj   +2 more sources

Phase-Stabilized Delivery for Multiple Local Oscillator Signals via Optical Fiber

open access: yesIEEE Photonics Journal, 2014
In this paper, we propose and demonstrate a multiple local oscillator (LO) signal phase stabilization technique for long-distance fiber delivery. One of the LO signals, which acts as a reference single, is round-trip transferred between the central ...
Anxu Zhang   +7 more
doaj   +3 more sources

Effects of sodium chloride on circadian period and temperature compensation of KaiC phosphorylation [PDF]

open access: yesScientific Reports
The circadian clock is an internal timekeeping system that generates ~ 24-h cycles in physiology and behavior, maintaining a remarkably consistent period across physiological conditions and temperature1.
Eugene Kim   +3 more
doaj   +2 more sources

Optical frequency comb integration in radio telescopes: advancing signal generation and phase calibration [PDF]

open access: yesLight: Science & Applications
Very long baseline interferometry (VLBI) enables high-angular-resolution observations in astronomy and geodesy by synthesizing a virtual telescope with baselines spanning hundreds to thousands of kilometres. Achieving high instrumental phase stability in
Minji Hyun   +10 more
doaj   +2 more sources

A Passively Wavelength-Stabilized Mid-Infrared Optical Parametric Oscillator

open access: yesPhotonics, 2022
High-power and widely tunable continuous-wave optical parametric oscillators (cw OPOs), as mature radiation sources in the mid-infrared range, are limited by their frequency fluctuation.
Liemao Hu   +5 more
doaj   +1 more source

Qubit decoherence and symmetry restoration through real-time instantons

open access: yesPhysical Review Research, 2022
A parametrically driven quantum oscillator, stabilized by a nonlinear dissipation, exhibits a spontaneous breaking of the parity symmetry. It results in the quantum bistability, corresponding to a Bloch sphere of dark states.
Foster Thompson, Alex Kamenev
doaj   +1 more source

Direct stabilization of optomechanical oscillators

open access: yesOptics Letters, 2017
We demonstrate a simple and effective technique for stabilizing the oscillation amplitude of a radiation pressure driven RF optomechanical oscillator (OMO). By controlling the optomechanical gain through a feedback loop that uses the oscillation amplitude itself as the feedback parameter, we have been able to suppress the amplitude fluctuations and ...
Ke, Huang, Mani, Hossein-Zadeh
openaire   +2 more sources

Autodyne characteristics of stabilized UHF-oscillators at a strong reflected signal [PDF]

open access: yesТехнологія та конструювання в електронній апаратурі, 2011
Calculations and examinations of phase, amplitude, frequency and amplitude-frequency characteristics are fulfilled for the autodyne system stabilized by the external high-Q cavity as well as spectral characteristics under condition of exact and non-exact
V. Ya. Noskov   +2 more
doaj   +1 more source

Dynamics of quantum droplets in an external harmonic confinement

open access: yesScientific Reports, 2022
Recent theoretical and experimental results show that one-dimensional (1D) weakly interacting atomic Bose-Bose mixtures with repulsive interspecies mean field (MF) interaction are stabilized by attractive quadratic beyond-mean-field (BMF) effects into ...
Maitri R. Pathak, Ajay Nath
doaj   +1 more source

The phase stability of nanosecond Gunn oscillators [PDF]

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: Detailed theoretical and experimental studies have been carried out in order to investigate the problem of a phase stability in electrodynamically uncoupled Gunn oscillators.
Vasily Y. Kozhevnikov   +3 more
doaj   +1 more source

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