Abstract

We describe a novel external light control element that is capable of stabilizing both the amplitude and the frequency of an optical input field. A demanding application of this electro-optical parametric oscillator, conversion of incoherent inputs into coherent, phase-trackable outputs with small residual intensity modulation, is reported. Estimations show that commercially available light-emitting diodes have the potential to act as pump sources, although the incoherent optical input field used in these initial experiments was prepared by filtering of the coherent emission of a laser diode.

© 1998 Optical Society of America

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References

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    [CrossRef] [PubMed]
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    [CrossRef]
  3. H. R. Telle, presented at the European Time and Frequency Forum, 1997, Neuchâtel, Switzerland, 1997.
  4. C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
    [CrossRef]
  5. J. Frahm, Ann. Phys. (Leipzig) 30, 173 (1973).
    [CrossRef]

1994 (1)

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

1993 (1)

1984 (1)

1973 (1)

J. Frahm, Ann. Phys. (Leipzig) 30, 173 (1973).
[CrossRef]

Bachor, H.-A.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Frahm, J.

J. Frahm, Ann. Phys. (Leipzig) 30, 173 (1973).
[CrossRef]

Freitag, I.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Gray, M. B.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Hall, J. L.

Hänsch, T. W.

Harb, C. C.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Rottengatter, P.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Schilling, R.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Telle, H. R.

H. R. Telle, presented at the European Time and Frequency Forum, 1997, Neuchâtel, Switzerland, 1997.

Welling, H.

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

Zhu, M.

Ann. Phys. (Leipzig) (1)

J. Frahm, Ann. Phys. (Leipzig) 30, 173 (1973).
[CrossRef]

IEEE J. Quantum Electron. (1)

C. C. Harb, M. B. Gray, H.-A. Bachor, R. Schilling, P. Rottengatter, I. Freitag, and H. Welling, IEEE J. Quantum Electron. 30, 2907 (1994).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Lett. (1)

Other (1)

H. R. Telle, presented at the European Time and Frequency Forum, 1997, Neuchâtel, Switzerland, 1997.

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Figures (4)

Fig. 1
Fig. 1

Experimental setup: LD, free-running GaAlAs laser diode; ISO, isolator (120-dB isolation ratio); FP, optical filter; PBS, polarizing beam splitter; LO, optical local oscillator. Other abbreviations defined in text.

Fig. 2
Fig. 2

Measured spectral densities of relative intensity noise of (a) the EOPO pump and (b) the EOPO output. Bandwidth, 10 Hz.

Fig. 3
Fig. 3

Measured intensity distributions of (a) the EOPO pump and (b) the EOPO output. Bandwidth, 3 MHz; sampling rate, 125 Msamples/s; record length, 50 ksamples. (c) Electronic noise causes the negative intensity values in curve (a).

Fig. 4
Fig. 4

Measured distributions of the complex amplitude of (a) the pump and (b) the EOPO output. Local oscillators used for heterodyning: (a) EOPO; (b) an independent extended-cavity laser diode. Bandwidth, 3 MHz.

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