Anomalous spontaneous<i>–</i>stimulated-decay phase transition and zero-threshold laser action in a microscopic cavity

Martini, F. De; Jacobovitz, G. R.

doi:10.1103/physrevlett.60.1711

Cited by 222 publications

(95 citation statements)

References 16 publications

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“…This behavior is analogous to the "thresholdless" lasing discussed in Refs. [18,[20][21][22] and reviewed by Rice and Carmichael [19]. For the system illustrated in Fig.…”

Section: A Field and Atom Variables For Various Cavity Lengthsmentioning

confidence: 99%

“…By way of a physically motivated transformation for which the length of a Fabry-Perot cavity is made progressively shorter, we utilize these results to investigate the continuous passage from a domain in which conventional laser theory is applicable into a regime of strong coupling for which the full quantum theory is required. We thereby gain some insight into the relationship of our system to prior theoretical treatments related to the definition of the laser threshold and to "thresholdless" lasing [18][19][20][21][22]. The four-state model is further employed to calculate the intracavity photon number versus pump detuning, thereby exhibiting the "vacuum-Rabi" splitting for the atom-cavity system [23][24][25], and to compute the optical spectrum of the intracavity field.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of theory and experiment for a one-atom laser in a regime of strong coupling

et al. 2004

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Our recent paper reports the experimental realization of a one-atom laser in a regime of strong coupling [J. McKeever, A. Boca, A. D. Boozer, J. R. Buck, and H. J. Kimble, Nature (London) 425, 268 (2003)]. Here we provide the supporting theoretical analysis relevant to the operating regime of our experiment. By way of a simplified four-state model, we investigate the passage from the domain of conventional laser theory into the regime of strong coupling for a single intracavity atom pumped by coherent external fields. The four-state model is also employed to exhibit the vacuum-Rabi splitting and to calculate the optical spectrum. We next extend this model to incorporate the relevant Zeeman hyperfine states as well as a simple description of the pumping processes in the presence of polarization gradients and atomic motion. This extended model is employed to make quantitative comparisons with our earlier measurements for the intracavity photon number versus pump strength and for the photon statistics as expressed by the intensity correlation function g ͑2͒ ͑͒.

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“…This behavior is analogous to the "thresholdless" lasing discussed in Refs. [18,[20][21][22] and reviewed by Rice and Carmichael [19]. For the system illustrated in Fig.…”

Section: A Field and Atom Variables For Various Cavity Lengthsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of theory and experiment for a one-atom laser in a regime of strong coupling

et al. 2004

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“…The reduction is likely not due to fast excitation outcompeting the intersystem crossing to triplet states since lasing can be sustained for up to 50 ns at similar excitation densities [23] without a scheme for removal of triplet excitons [24]. The reduction in threshold also cannot be attributed to small microcavity effects [25] because the reduction is observed to be independent of cavity length. The same low-Q 035209-3 microcavity as described above is fabricated with lengths of λ/2, λ, and 3λ/2.…”

Section: A Lasing Threshold Reductionmentioning

confidence: 99%

Reduced lasing threshold from organic dye microcavities

et al. 2014

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We demonstrate an unexpected tenfold reduction in the lasing threshold of an organic vertical microcavity under subpicosecond optical excitation. In contrast to conventional theory of lasing, we find that the lasing threshold depends on the rate at which excitons are created rather than the total energy delivered within the exciton lifetime. The threshold reduction is discussed in the context of microcavity-enhanced super-radiant coupling between the excitons. The interpretation of super-radiance is supported by the temporal relaxation dynamics of the microcavity emission, which follows the super-radiance time rather than the cavity lifetime. This demonstration suggests that room-temperature super-radiant effects could generally lower the threshold in four-level lasing systems of similar relaxation dynamics.

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“…1 all spontaneous emission goes into the lasing mode. Such a configuration may allow thresholdless laser operation [12][13][14][15].…”

mentioning

confidence: 98%

Computation of the coherence time of quantum‐dot microcavity lasers including photon–carrier and photon–photon correlations

Wiersig¹

2010

Physica Status Solidi (b)

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Microcavity lasers with semiconductor quantum dots as active material have attracted considerable attention recently. We present a theoretical study of the first-order coherence of such novel light sources. The correlation function g ð1Þ ðtÞ and the corresponding coherence time are computed including photoncarrier and photon-photon correlations with respect to the delay time t up to the quadruplet level of the cluster expansion scheme. A comparison of the different levels of the cluster expansion is provided.

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Anomalous spontaneous–stimulated-decay phase transition and zero-threshold laser action in a microscopic cavity

Cited by 222 publications

References 16 publications

Comparison of theory and experiment for a one-atom laser in a regime of strong coupling

Comparison of theory and experiment for a one-atom laser in a regime of strong coupling

Reduced lasing threshold from organic dye microcavities

Computation of the coherence time of quantum‐dot microcavity lasers including photon–carrier and photon–photon correlations

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