Results 251 to 260 of about 6,200,319 (299)
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Frequency and polarization effects in stabilization
Physical Review A, 1992Quantitative results are presented for stabilization of atoms against ionization by strong laser fields over a wide range of frequencies for circular and linear polarization. With circular polarization, stabilization occurs for all frequencies. At high frequency (ω>1 a.u.), the stabilization intensity is predicted by the occurrence of photon thresholds.
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Optical frequency stabilization with a synchronous frequency-to-voltage converter
Applied Optics, 2019Between a frequency comb mode and a continuous-wave (cw) laser, we demonstrate that a frequency-to-voltage converter can be used to transfer frequency instability in the 10-14 range for integration times τ between 0.25 and 2100 s. The technique is relevant when the optical beat between laser signals is weak and a high level of frequency stability is ...
F. C. Reynolds, J. J. McFerran
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Characterization of the Frequency Stability of a Multibranch Optical Frequency Comb
IEEE Transactions on Instrumentation and Measurement, 2020Presently, ultra-precise optical clocks’ comparisons can be performed easily using the optical frequency combs (OFCs) as a transfer oscillator. In this scheme, different OFC branches are usually used to enable optical clocks’ comparison at different wavelengths.
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Frequency dependence and stability
Mathematical Biosciences, 1976Abstract The use of difference equations is suggested for simulating frequency-dependent changes in gene frequencies. Our model shows a good fit to published cases of populations in which gene frequencies reached stable equilibrium. However, in the same deterministic model, slight changes in the value of some parameters can lead to cyclic or chaotic ...
Raveh, Adi, Ritte, Uzi
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Oscillator Frequency Stability
1978The term frequency stability is a generic term which means a variety of things to different people depending on their individual interests. In its broadest concept, it means the degree of constancy of the frequency of an oscillator under a particular set of conditions.
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A Stabilized Frequency Divider
Proceedings of the IRE, 1941A method is described for stabilizing the frequency of a relaxation oscillator to any required degree. The stabilized oscillator may be synchronized with a high-order submultiple of a control frequency without any possibility of synchronization at any other submultiple, even if the operating conditions vary widely; the maintenance of synchronization ...
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Frequency stability and measurement
1993An ideal source provides a single spectral line with zero width and finite energy. This strange mathematical world does not exist in practice, because real oscillators produce lines of finite width and have random amplitude, frequency and phase fluctuations.
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Correction to "Measurements of frequency stability"
Proceedings of the IEEE, 1986F. L. Walls, D. W. Allan
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