Results 261 to 270 of about 349,357 (303)
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Noise in strong laser-atom interactions: Phase telegraph noise
Physical Review A, 1984We discuss strong laser-atom interactions that are subjected to jump-type (random telegraph) random-phase noise. Physically, the jumps may arise from laser fluctuations, from collisions of various kinds, or from other external forces. Our discussion is carried out in two stages.
J. H. Eberly +2 more
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Saturated absorption spectroscopy using diode-laser phase noise
Physical Review A, 1994We have investigated theoretically the applicability of phase-fluctuating laser fields in saturated absorption spectroscopy. The fluctuations of pump and probe fields are fully correlated if they are derived from the same laser source. Inside the saturable medium, phase fluctuations are converted into intensity noise. This nonlinear mixing modifies the
, Walser, , Cooper, , Zoller
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Characterization of phase noise in semiconductor lasers
Applied Physics Letters, 1982Phase noise in semiconductor lasers has been investigated by many authors in the range of low frequencies (<1 MHz). In this letter we present for the first time phase noise measurements extended up to frequencies greater than 1 GHz. Experimental results showing the power spectral density Sφ̇(ω) of the instantaneous frequency φ̇(t) and the ...
S. Piazzolla, P. Spano, M. Tamburrini
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Phase noise in semiconductor lasers
Journal of Lightwave Technology, 1986The subject of phase noise in semiconductor lasers is reviewed. The description of noise in lasers and those aspects of phase noise that are relevant to optical communications are emphasized. The topics covered include: Langevin forces; laser linewidth above threshold and below threshold; line structure due to relaxation oscillations; phase ...
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Phase noise issues in femtosecond lasers
SPIE Proceedings, 2001This paper explores the affect of phase modulation (PM), amplitude modulation (AM), and thermal noise on the rf spectrum, phase jitter, timing jitter, and frequency stability of femtosecond lasers and other precision sources. Using these concepts we can suggest how some noise aspects of femtosecond pulsed lasers should scale.
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Compensation of Laser Phase Noise in Coded Distributed Acoustic Sensing
28th International Conference on Optical Fiber Sensors, 2023We demonstrate, for the first time to our knowledge, a technique for the com- pensation of phase noise effects in coded pulse compression DAS and compare its perfor- mance to systems using frequency-modulated pulse compression.
Piñeiro Ben, Enrique +2 more
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Phase noise of widely-tunable SG-DBR laser
OFC 2003 Optical Fiber Communications Conference, 2003., 2003The measured phase noise of a widely-tunable SG-DBR laser exhibits white high-frequency noise and low-frequency nonwhite components. The RIN after transmission through fiber indicates that white noise dominantly determines the transmission performance.
S. Nakagawa +7 more
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Phase noise measurements of external- cavity semiconductor lasers
Conference on Lasers and Electro-Optics, 1985With the current interest in coherent sources for optical communication systems, much effort is being directed at obtaining semiconductor lasers with a high degree of temporal coherence. This corresponds to producing a laser with a linewidth of a few kilohertz.
L. E RICHTER +3 more
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Accurate Millimeter-Wave Laser Phase Noise Measurement Technique
IEEE Photonics Technology Letters, 2013In this letter, a method based on time sampling and signal processing is proposed to measure the phase noise of any unstable optically generated carrier. We could overcome the difficulties of measuring the phase noise of a passively mode-locked laser output signal with 60-GHz repetition frequency due to frequency instability by replacing a spectrum ...
Khayatzadeh, Ramin +3 more
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Exact Moments of Filtered Laser Phase Noise
Journal of Lightwave Technology, 2007In this paper, we derive an exact finite power series expression of the nth-order moment of a complex filtered phase noise random variable. This random variable is usually encountered in the error probability analysis of coherent heterodyne optical receivers.
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