Photon statistics of a ground-state-pumped laser

Single-mode cavity laser light statistics is considered within the framework of rate equations. According to this approach, fluctuations are caused by jumps in active and detecting atoms. The algebra is simple, allowing analytical expressions for the intracavity Fano factor and the photocurrent spectral density to be obtained. Poissonian, quiet, and optical pumps are considered. The results are verified by comparison with Monte Carlo simulations. An essentially exhaustive investigation of sub-Poissonian light generation by classical laser schemes, two-mode lasers, and semiconductor lasers is proposed.

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“…Note that Ᏺ is below unity within some pumping range. This behavior is in good agreement with previous quantum-optics results [6,8,16,17].…”

Section: Monte Carlo Modelsupporting

confidence: 93%

“…The variance of m equals the integration over frequency of Ᏽ ∆m (Ω), the normalized spectral density of ∆m. As previously, Ᏽ ∆m (Ω) is obtained by solving for ∆m instead of ∆Q and its general form is (17) where and are real coefficients. The Fano factor is thus (18) It has already been illustrated in Fig.…”

Section: (2)mentioning

confidence: 99%

Rate-equation approach to laser light statistics

Chusseau

Arnaud²,

Philippe

2003

Opt. Spectrosc.

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“…Notice that F is below unity within some pumping range. There is good agreement with previous Quantum-Optics results [25].…”

Section: Eventsupporting

confidence: 92%

“…Figure 4 shows how the steady-state photon number evolves as a function of the pumping parameter P for various values of the spontaneous decay rate γ. Parameters are similar to [25] except p u -values chosen here for a perfect superimposition of the coherent and incoherent plots. Moreover it corresponds to optimum pump-noise suppression as derived in Sec.…”

Section: Four-levels Atoms Lasers a Steady-statementioning

confidence: 99%

Rate-equation approach to atomic-laser light statistics

Chusseau

Arnaud²,

Philippe

2002

Phys. Rev. A

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We consider three- and four-level atomic lasers that are either incoherently (unidirectionally) or coherently (bidirectionally) pumped, the single-mode cavity being resonant with the laser transition. The intra-cavity Fano factor and the photo-current spectral density are evaluated on the basis of rate equations. According to that approach, fluctuations are caused by jumps in active and detecting atoms. The algebra is considerably simpler than the one required by Quantum-Optics treatments. Whenever a comparison can be made, the expressions obtained coincide. The conditions under which the output light exhibits sub-Poissonian statistics are considered in detail. Analytical results, based on linearization, are verified by comparison with Monte Carlo simulations. An essentially exhaustive investigation of sub-Poissonian light generation by three- and four-level atoms lasers has been performed. Only special forms were reported earlier.Comment: 9 pages, 7 figures, RevTeX

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“…Numerous paper have addressed this problem before, e.g. [1,2,3,4,5,6,7,8]. However, explicit formulas that are not restricted to high-pumping levels and do not neglect spontaneous decay do not seem to be available.…”

Section: Introductionmentioning

confidence: 99%

Two-level laser light statistics

Chusseau¹,

Arnaud²,

Philippe³

2002

Optics Communications

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The statistics of the light emitted by two-level lasers is evaluated on the basis of generalized rate equations. According to that approach, all fluctuations are interpreted as being caused by the jumps that occur in active and detecting atoms. The intra-cavity Fano factor and the photo-current spectral density are obtained analytically for Poissonian and quiet pumps. The algebra is simple and the formulas hold for small as well as large pumping rates. Lasers exhibit excess noise at low pumping levels.

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Photon statistics of a ground-state-pumped laser

Cited by 7 publications

References 10 publications

Rate-equation approach to laser light statistics

Rate-equation approach to laser light statistics

Rate-equation approach to atomic-laser light statistics

Two-level laser light statistics

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