2001
DOI: 10.1364/ol.26.001406
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Phase synchronization in coupled Nd:YAG lasers

Abstract: We investigate experimentally the transition to phase synchronization in coupled Nd:YAG lasers. As the coupling strength increases, the phase difference of two chaotic laser outputs develops from nonsynchronous to a phase-synchronous state via +/-2pi phase jumps. We analyze this transition.

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Cited by 25 publications
(8 citation statements)
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“…The notion of CPS has been investigated so far in oscillators driven by external periodic force [15,16], chaotic oscillators with different natural frequencies and/or with parameter mismatches [11,17,18,19], arrays of coupled chaotic oscillators [14,20] and also in essentially different chaotic systems [21,22]. In addition CPS has also been demonstrated experimentally in various systems, such as electrical circuits [21,23,24,25], lasers [26,27], fluids [28], biological systems [29,30], climatology [31], etc. On the other hand CPS in nonlinear time-delay systems, which form an important class of dynamical systems, have not yet been identified and addressed.…”
Section: Introductionmentioning
confidence: 99%
“…The notion of CPS has been investigated so far in oscillators driven by external periodic force [15,16], chaotic oscillators with different natural frequencies and/or with parameter mismatches [11,17,18,19], arrays of coupled chaotic oscillators [14,20] and also in essentially different chaotic systems [21,22]. In addition CPS has also been demonstrated experimentally in various systems, such as electrical circuits [21,23,24,25], lasers [26,27], fluids [28], biological systems [29,30], climatology [31], etc. On the other hand CPS in nonlinear time-delay systems, which form an important class of dynamical systems, have not yet been identified and addressed.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, the coupling strength is updated according to the (17) and the parameters update laws are taken as (19). The drive system (2) and the response system (3) can be achieved modified projective synchronization.…”
Section: Corollarymentioning
confidence: 99%
“…Up to now, many types of synchronization phenomena have been discovered such as complete synchronization (CS) [8,14,15], phase synchronization (PS) [16,17], lag synchronization (LS) [18], generalized synchronization [18,19], generalized projective synchronization (GPS) [20], and so on. Recently, a new type of synchronization phenomenon-modified projective synchronization (MPS) was introduced by Li [21].…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, in the cited previous studies, the authors were mostly interested in showing that synchronization occurred, without characterizing and discriminating phase-locking and bounded-phase regimes. In the present case, the heterodyne nature of our source readily offers experimental access to the phase difference, while in the previous works the phase had to be retrieved numerically from intensity time series [23,24,27]. By measuring phase noise spectra, in DFLs it is possible to obtain a precise experimental characterization and a quantitative comparison of the different synchronization regimes.…”
mentioning
confidence: 94%