Abstract

We report pulsed squeezed-light generation by means of an optical parametric downconverter that is pumped by the second harmonic of a mode-locked Q-switched laser. Using the fundamental beam of the laser as a local oscillator, we observe 2-dB squeezing for a parametric gain of 2.0. This local oscillator, however, is nonoptimal because of its spatiotemporal mode mismatch with the squeezed mode generated by the downconverter. We describe an experiment in which a matched local oscillator is generated with the use of an optical parametric amplifier that is pumped by the same laser as is the downconverter. In this case, 2-dB squeezing is observed for a parametric gain of 1.5. The present experimental setup is limited by the uncontrollable phase fluctuations that prohibit us from making squeezing measurements at higher parametric gains.

© 1992 Optical Society of America

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References

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  1. P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
    [Crossref] [PubMed]
  2. A. V. Masalov, in Progress in Optics XXII, E. Wolf, ed. (North-Holland, Amsterdam, 1985), pp. 147–196.
  3. J. Huang, P. Kumar, O. Aytür, in International Conference on Quantum Electronics, Vol. 8 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), p. 44.
  4. O. Aytür, P. Kumar, Phys. Rev. Lett. 65, 1551(1990).
    [Crossref] [PubMed]
  5. H. P. Yuen, V. W. S. Chan, Opt. Lett. 8, 177 (1983); H. P. Yuen, V. W. S. Chan, Opt. Lett. 8, 345 (erratum) (1983); B. L. Schumaker, Opt. Lett. 9, 189 (1984); B. Yurke, P. Grangier, R. E. Slusher, M. J. Potasek, Phys. Rev. A 35, 3586 (1987).
    [Crossref] [PubMed]
  6. O. Aytür, P. Kumar, Opt. Lett. 15, 390 (1990).
    [Crossref] [PubMed]
  7. K. A. Winick, P. Kumar, IEEE J. Lightwave Technol. 6, 513 (1988).
    [Crossref]
  8. O. Aytür, P. Kumar, in Digest of Optical Society of America Annual Meeting (Optical Society of America, Washington, D.C., 1990), p. 4.
  9. A. LaPorta, R. E. Slusher, Phys. Rev. A 44, 2013 (1991).
    [Crossref]

1991 (1)

A. LaPorta, R. E. Slusher, Phys. Rev. A 44, 2013 (1991).
[Crossref]

1990 (3)

P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Phys. Rev. Lett. 65, 1551(1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Opt. Lett. 15, 390 (1990).
[Crossref] [PubMed]

1988 (1)

K. A. Winick, P. Kumar, IEEE J. Lightwave Technol. 6, 513 (1988).
[Crossref]

1983 (1)

Aytür, O.

P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Phys. Rev. Lett. 65, 1551(1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Opt. Lett. 15, 390 (1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, in Digest of Optical Society of America Annual Meeting (Optical Society of America, Washington, D.C., 1990), p. 4.

J. Huang, P. Kumar, O. Aytür, in International Conference on Quantum Electronics, Vol. 8 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), p. 44.

Chan, V. W. S.

Huang, J.

P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
[Crossref] [PubMed]

J. Huang, P. Kumar, O. Aytür, in International Conference on Quantum Electronics, Vol. 8 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), p. 44.

Kumar, P.

P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Phys. Rev. Lett. 65, 1551(1990).
[Crossref] [PubMed]

O. Aytür, P. Kumar, Opt. Lett. 15, 390 (1990).
[Crossref] [PubMed]

K. A. Winick, P. Kumar, IEEE J. Lightwave Technol. 6, 513 (1988).
[Crossref]

O. Aytür, P. Kumar, in Digest of Optical Society of America Annual Meeting (Optical Society of America, Washington, D.C., 1990), p. 4.

J. Huang, P. Kumar, O. Aytür, in International Conference on Quantum Electronics, Vol. 8 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), p. 44.

LaPorta, A.

A. LaPorta, R. E. Slusher, Phys. Rev. A 44, 2013 (1991).
[Crossref]

Masalov, A. V.

A. V. Masalov, in Progress in Optics XXII, E. Wolf, ed. (North-Holland, Amsterdam, 1985), pp. 147–196.

Slusher, R. E.

A. LaPorta, R. E. Slusher, Phys. Rev. A 44, 2013 (1991).
[Crossref]

Winick, K. A.

K. A. Winick, P. Kumar, IEEE J. Lightwave Technol. 6, 513 (1988).
[Crossref]

Yuen, H. P.

IEEE J. Lightwave Technol. (1)

K. A. Winick, P. Kumar, IEEE J. Lightwave Technol. 6, 513 (1988).
[Crossref]

Opt. Lett. (2)

Phys. Rev. A (1)

A. LaPorta, R. E. Slusher, Phys. Rev. A 44, 2013 (1991).
[Crossref]

Phys. Rev. Lett. (2)

O. Aytür, P. Kumar, Phys. Rev. Lett. 65, 1551(1990).
[Crossref] [PubMed]

P. Kumar, O. Aytür, J. Huang, Phys. Rev. Lett. 64, 1015 (1990).
[Crossref] [PubMed]

Other (3)

A. V. Masalov, in Progress in Optics XXII, E. Wolf, ed. (North-Holland, Amsterdam, 1985), pp. 147–196.

J. Huang, P. Kumar, O. Aytür, in International Conference on Quantum Electronics, Vol. 8 of 1990 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1990), p. 44.

O. Aytür, P. Kumar, in Digest of Optical Society of America Annual Meeting (Optical Society of America, Washington, D.C., 1990), p. 4.

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Figures (4)

Fig. 1
Fig. 1

Schematic of the experimental setup for squeezed-light generation. The fundamental beam from the laser is used as a LO in homodyne detection. The dashed line is a test signal input to the downconverter.

Fig. 2
Fig. 2

Time trace of the squeezed-vacuum noise at 28 MHz as the LO phase is scanned. The 0-dB line corresponds to the vacuum-state noise level. The solid curve is a theoretical fit.

Fig. 3
Fig. 3

Schematic of the experimental setup for squeezed-light detection with a matched LO. The idler output from the OPA is used as a LO in homodyning.

Fig. 4
Fig. 4

Time trace of the squeezed-vacuum noise at 28 MHz as the matched LO phase is scanned. The 0-dB line corresponds to the vacuum-state noise level.

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