Results 11 to 20 of about 7,132 (302)
Terahertz microcomb oscillator stabilized by molecular rotation
APL PhotonicsControlling the coherence between light and matter has enabled the radiation of electromagnetic waves with a spectral purity and stability that defines the Système International (SI) second. Transitions between hyperfine levels in atoms are accessible in
James Greenberg +2 more
doaj +2 more sources
STABILIZED RELAXATION OSCILLATOR [PDF]
, 1962 An unsynchronized thyratron relaxation oscillator circuit was developed, whose rate is stabilized through the use of a Schmitt discriminator to determine the thyratron firing point. Drift and jitter in the period are less than 0.1% after warmup. (auth)
Cohn, Charles Erwin
openaire +3 more sources
Control and Operation of a Hybrid Actuator for Maglev Applications
Power Electronics and Drives, 2021 The hybrid actuator presented in this article is meant to enable stationary and slow dynamic levitation in Maglev applications. The term ‘hybrid’ refers to the design of the actuator, which is a combination of permanent magnets (PM) and electromagnets ...
Rickwärtz Jan Philipp +3 more
doaj +1 more source
Atmosphere, 2021 We present a differential absorption lidar (DIAL) laser transmitter concept designed around a Nested Cavity Optical Parametric Oscillator (NesCOPO) based Master Oscillator Power Amplifier (MOPA).
Jonas Hamperl +21 more
doaj +1 more source
Stability of coupled hybrid oscillators
Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164), 2002 We describe a method for the decentralized phase regulation of two coupled hybrid oscillators. In particular, we prove that the application of this synchronization method to two hopping robots, each of which individually achieves only asymptotically stable hopping, results in an asymptotically stable limit cycle for the coupled system exhibiting the ...
Eric Klavins, Daniel E. Koditschek
openaire +2 more sources
Sympathetic cooling of a membrane oscillator in a hybrid mechanical-atomic system [PDF]
, 2014 The quantum behaviour of macroscopic mechanical oscillators is currently being investigated using a variety of mechanical systems and techniques such as optomechanical cooling and cold damping.
Jöckel, Andreas
core +1 more source
Mitigating transverse mode instability in fiber laser oscillator by employing direct pump modulation
Frontiers in Physics, 2023 The transverse mode instability (TMI) is a thermal-optical effect, inducing a sudden deterioration of beam quality and average power. This non-linear effect will greatly limit the power scaling of fiber lasers.
Junyu Chai +32 more
doaj +1 more source
Frequency stability in resonator-stabilized oscillators [PDF]
IEEE Transactions on Circuits and Systems, 1990 A simplified stability analysis of resonator-stabilized oscillators is carried out by using the describing function approach. On this basis a criterion for the evaluation and optimization of the frequency stabilization introduction in an oscillator by a resonating element with a large quality factor is proposed. In particular, a frequency-stabilization
Filicori F., Vannini G.
openaire +2 more sources
Micromachines, 2023 We carry out a detailed investigation of TMI mitigation by pump modulation based on multiple current waveforms in a fiber laser oscillator. Compared with continuous wave (CW), the modulation of various waveforms, including sinusoidal wave, triangular ...
Junyu Chai +10 more
doaj +1 more source
Polarization Mode Noise in Ultra-Low Drift Phase Reference Distribution System over Fiber Network [PDF]
, 2005 The impact of polarization mode noise on the temporal drift of a delivered analogue phase reference signal through an optical fiber network is studied.
Shillue, William P. +4 more
core +1 more source