Abstract

We have experimentally studied the effects of pump–probe detuning in nearly degenerate four-wave mixing. The data show multiresonant behavior as a function of the pump–probe detuning at both low and high intensities. At low intensities, the structure is the result of Doppler motion. At high intensities, five-peak structure is observed and is explained by the standing-wave modulation of the ac Stark splitting of the atomic levels.

© 1981 Optical Society of America

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References

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  1. J. Nilsen, A. Yariv, J. Opt. Soc. Am. 71, 180 (1981).
    [CrossRef]
  2. T. Fu, M. Sargent, Opt. Lett. 4, 366 (1979).
    [CrossRef] [PubMed]
  3. D. J. Harter, R. W. Boyd, IEEE J. Quantum Electron. QE-16, 1126 (1980).
    [CrossRef]
  4. J. Nilsen, N. S. Gluck, A. Yariv, Opt. Lett. 6, 380 (1981).
    [CrossRef] [PubMed]
  5. R. C. Lind, D. G. Steel, Opt. Lett. 12, (1981).

1981 (3)

1980 (1)

D. J. Harter, R. W. Boyd, IEEE J. Quantum Electron. QE-16, 1126 (1980).
[CrossRef]

1979 (1)

Boyd, R. W.

D. J. Harter, R. W. Boyd, IEEE J. Quantum Electron. QE-16, 1126 (1980).
[CrossRef]

Fu, T.

Gluck, N. S.

Harter, D. J.

D. J. Harter, R. W. Boyd, IEEE J. Quantum Electron. QE-16, 1126 (1980).
[CrossRef]

Lind, R. C.

R. C. Lind, D. G. Steel, Opt. Lett. 12, (1981).

Nilsen, J.

Sargent, M.

Steel, D. G.

R. C. Lind, D. G. Steel, Opt. Lett. 12, (1981).

Yariv, A.

IEEE J. Quantum Electron. (1)

D. J. Harter, R. W. Boyd, IEEE J. Quantum Electron. QE-16, 1126 (1980).
[CrossRef]

J. Opt. Soc. Am. (1)

Opt. Lett. (3)

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Figures (7)

Fig. 1
Fig. 1

Geometry for nearly degenerate FWM. The pumps are at frequency ω1, but the probe is shifted by an amount δ.

Fig. 2
Fig. 2

Experimental layout for studying nearly degenerate FWM.

Fig. 3
Fig. 3

Scanning Fabry–Perot signal showing the frequency shift of the signal wave (−δ) with respect to the frequency shift of the input probe (δ) demonstrating that, because of phase matching, ω1 + ω1ω2ωs = 0.

Fig. 4
Fig. 4

Experimental demonstration of multiresonant behavior of nearly degenerate FWM for low pump intensity. The frequency shifts occur at δ = Δ and δ = 2Δ, as expected for inhomogeneously broadened material.

Fig. 5
Fig. 5

The measured bandwidth of the pump–probe detuning response at low pump intensity. The width is determined by the longitudinal relaxation rate T1−1.

Fig. 6
Fig. 6

The pump–probe detuning response as measured at high pump intensity. Five resonances are observed. The central resonance occurs at δ = 0. The two structures designated B occur at δ = ± Δ. The two structures designated A are due to the ac Stark splitting of the atomic levels and occur at δ = ±Ω′.

Fig. 7
Fig. 7

The bandwidth of the pump-probe detuning signal under high-reflectivity conditions (R ≃ 150%, α1 ≃ 30).

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