Results 211 to 220 of about 377,227 (256)

Doppler modulation and Zeeman modulation: laser frequency stabilization without direct frequency modulation

Applied Optics, 1988
We discuss two methods (Zeeman modulation and Doppler modulation) for locking the frequency of a singlemode cw laser to an atomic absorption line. These methods do not require the laser frequency to be modulated directly. In the first scheme the absorption frequency of the atom is modulated via the Zeeman effect; in the second scheme the laser ...
A, Weis, S, Derler
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Frequency Modulation

1957
Contains reports on six research projects.
Baghdady, Elie J., Rubissow, G. J., Bahiana, L. C., Weiner, D. D., McLaughlin, R. J.   +4 more
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Generalized Frequency Modulation.

2001
In frequency modulation (FM) systems, a continuous-time information signal is modulated onto a sinusoidal carrier wave by using the information signal to modulate the frequency of the carrier wave. In this thesis, a more general type of modulation is developed, of which FM is a special case, that we refer to as rate modulation. A rate modulation system
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Orthogonal Modes of Frequency Modulation and the Sturm–Liouville Frequency Modulation Model

IEEE Transactions on Signal Processing, 2012
Sinusoidal signals and complex exponentials play a critical role in LTI system theory in that they are eigenfunctions of the LTI convolution operator. While processing frequency-modulated (FM) waveforms using LTI systems, restrictive assumptions must be placed on the system so that a quasi-eigenfunction approximation holds.
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Frequency modulation

Electrical Engineering, 1940
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High‐speed direct single‐frequency modulation with large tuning rate and frequency excursion in cleaved‐coupled‐cavity semiconductor lasers

Applied Physics Letters, 1983
Tsang W T, Olsson N A, Logan R A
exaly  

Theoretical description of frequency modulation and wavelength modulation spectroscopy

Applied Optics, 1994
Edward Whittaker, W Lenth
exaly  

Frequency modulation detection using high‐Qcantilevers for enhanced force microscope sensitivity

Journal of Applied Physics, 1991
Albrecht T R, Grutter P, Rugar D
exaly  

Effects of carrier frequency, modulation rate, and modulation waveform on the detection of modulation and the discrimination of modulation type (amplitude modulation versus frequency modulation)

Journal of the Acoustical Society of America, 1995
Brian Moore, Sek Aleksander, Moore Brian C J   +2 more
exaly  

Effects of carrier frequency and background noise on the detection of mixed modulation

Journal of the Acoustical Society of America, 1994
Brian Moore, Sek Aleksander, Moore Brian C J   +2 more
exaly