Cold rubidium atoms are subjected to an amplitude-modulated far-detuned standing wave of light to form a quantum-driven pendulum. Here we discuss the dynamics of these atoms. Phase space resonances and chaotic transients of the system exhibit dynamics which can be useful in many atom optics appli...
The carrier wave is applied to the junction between the first and second switching diodes. A signal is produced from the junction which is very similar to an amplitude modulated signal consisting of a carrier wave which is amplitude modulated by the modulating signal. 展开 ...
waveamplitudesisintroduced.Severalparameterizationschemestoaccountforwavesaturationinnumericalmodelsaredescribed.Chapter8reviewsthemanytechniquesforobservingthemeteorologicalper-turbationsproducedbygravitywaves.Itisonlythroughtheseobservationsthattheexistenceofgravitywavescanbeinferred....
exist for the functions x(t) and y(t), since as discussed below they are pulse modulated; that is The effects of interstellar propagation can be thought of as imposing an all-pass dispersive filterexp [i~(f pulsar field is that y(t) is given by the product of a real amplitude modula...
If the repetition frequency and the shape of the pulses remain constant, the HF wave modulated by this signal is of the form V(t)=δAcos ωt[1+2∑n=1∞sinnδπnδπcosΩrt], in which n is a positive integer. When the pulse train is modulated in amplitude in such a way that...
AM—Amplitude Modulated:The strength (amplitude) of the radio wave is varied to encode the information into the carrier wave. Used with frequencies below 30MHz, for shortwave radio transmissions, in the commercial AM band, and for aircraft communications such aircraft-to-aircraft or aircraft-to-to...
where ω0 and E0 are the angular frequency and amplitude of the optical carrier. ωRF1 is the angular frequency of the RF1 signal, βRF1 = πVRF1/Vπ is the modulation index corresponding to RF2 loaded on the sub-MZMs, Vπ is the half-wave voltage of the sub-MZMs, J0 and J1 ...
We consider a phase modulated signal (Eq. 6) sampled at time \(t= k\Delta t\) $$\begin{aligned} x[k]:= x(k\Delta t)= A_0 \cos \left( \phi [k] \right) , \end{aligned}$$ (7) where \(A_0\) is the amplitude and \(\phi [k]:= \phi (k\Delta t)\) is the ...
the mechanical motion is driven by the vacuum fluctuations of the laser amplitude and transduced by the linear response of the cavity into phase fluctuations of the light field. The induced phase–amplitude correlation of the light field manifests as a noise reduction below the shot noise level ...
IV.B Wind–Wave Interaction Ocean surface waves are primarily generated by the wind. Because the water surface is composed randomly of various kinds of waves with different amplitude, frequency, and direction of propagation, their participation is usually decomposed into many different harmonic component...