Abstract

We have observed amplitude noise levels as much as 1.8 dB below the Standard quantum limit in the light generated by an external-cavity-stabilized index-guided quantum-well laser operating at room temperature. The measured amplitude noise remains more than 1.5 dB below the Standard quantum limit as the lasing wavelength of this system is tuned from 831 to 841 nm.

© 1993 Optical Society of America

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References

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1993 (2)

1992 (2)

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

P. J. Edwards, G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[Crossref] [PubMed]

1991 (1)

W. H. Richardson, S. Machida, Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[Crossref] [PubMed]

1989 (1)

1987 (1)

S. Machida, Y. Yamamoto, Y. Itaya, Phys. Rev. Lett. 58, 1000 (1987).
[Crossref] [PubMed]

1986 (1)

Y. Yamamoto, S. Machida, Phys. Rev. A 34, 4025 (1986).
[Crossref] [PubMed]

1985 (1)

Bjork, G.

E. Goobar, A. Karlsson, G. Bjork, P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[Crossref] [PubMed]

Craig, R.

Edwards, P. J.

P. J. Edwards, G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[Crossref] [PubMed]

Freeman, M. J.

Goobar, E.

E. Goobar, A. Karlsson, G. Bjork, P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[Crossref] [PubMed]

Inoue, S.

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

Itaya, Y.

S. Machida, Y. Yamamoto, Y. Itaya, Phys. Rev. Lett. 58, 1000 (1987).
[Crossref] [PubMed]

Karlsson, A.

E. Goobar, A. Karlsson, G. Bjork, P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[Crossref] [PubMed]

Machida, S.

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

W. H. Richardson, S. Machida, Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[Crossref] [PubMed]

S. Machida, Y. Yamamoto, Opt. Lett. 14, 1045 (1989).
[Crossref] [PubMed]

S. Machida, Y. Yamamoto, Y. Itaya, Phys. Rev. Lett. 58, 1000 (1987).
[Crossref] [PubMed]

Y. Yamamoto, S. Machida, Phys. Rev. A 34, 4025 (1986).
[Crossref] [PubMed]

Ohzu, H.

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

Pollard, G. H.

P. J. Edwards, G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[Crossref] [PubMed]

Richardson, W. H.

W. H. Richardson, S. Machida, Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[Crossref] [PubMed]

Rigole, P.-J.

E. Goobar, A. Karlsson, G. Bjork, P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[Crossref] [PubMed]

Saleh, B. E. A.

Scrifres, D. R.

Steel, D. G.

Teich, M. C.

Wang, H.

Yamamoto, Y.

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

W. H. Richardson, S. Machida, Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[Crossref] [PubMed]

S. Machida, Y. Yamamoto, Opt. Lett. 14, 1045 (1989).
[Crossref] [PubMed]

S. Machida, Y. Yamamoto, Y. Itaya, Phys. Rev. Lett. 58, 1000 (1987).
[Crossref] [PubMed]

Y. Yamamoto, S. Machida, Phys. Rev. A 34, 4025 (1986).
[Crossref] [PubMed]

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

Opt. Lett. (2)

Phys. Rev. A (2)

S. Inoue, H. Ohzu, S. Machida, Y. Yamamoto, Phys. Rev. A 46, 2757 (1992).
[Crossref] [PubMed]

Y. Yamamoto, S. Machida, Phys. Rev. A 34, 4025 (1986).
[Crossref] [PubMed]

Phys. Rev. Lett. (4)

S. Machida, Y. Yamamoto, Y. Itaya, Phys. Rev. Lett. 58, 1000 (1987).
[Crossref] [PubMed]

P. J. Edwards, G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[Crossref] [PubMed]

E. Goobar, A. Karlsson, G. Bjork, P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[Crossref] [PubMed]

W. H. Richardson, S. Machida, Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[Crossref] [PubMed]

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Figures (2)

Fig. 1
Fig. 1

External-cavity configuration and detection setup used. Pol., polarizer; PBS, polarization beam splitter.

Fig. 2
Fig. 2

(A) Amplitude noise spectra obtained with (solid curve) and without (dashed curve) optical feedback from the Littrow grating. Both curves alternately display the laser noise and the SQL corresponding to a total de detector current of 38.0 mA. The thermal noise level has been subtracted from both curves (it was less than −72 dBm). The inset shows the amplitude-squeezing level obtained at a series of output wavelengths. The dotted curve in the inset indicates the best possible squeezing level based on total system efficiency. (B) Amplitude squeezing as a function of frequency corresponding to (A). (Relay switching transients have been suppressed.) (C) Monochromator scans take concurrently with the amplitude noise spectra of (A).

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