Abstract

The coherence length of frequency-doubled light generated in an optical fiber pumped by light at λ = 1.064 μm was measured interferometrically. The largest bandwidth for second-harmonic generation in a fiber was measured to be approximately 3 Å. By coupling light at 1.064 and 0.532 μm simultaneously into an unprepared fiber, a dynamic grating was created in the fiber. This grating made it possible to frequency double different wavelengths in the IR region.

© 1988 Optical Society of America

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References

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  1. Y. Sasaki and Y. Ohmori, “Sum-frequency wave generation in optical fibers,” J. Opt. Commun. 4, 83 (1983).
  2. Y. Fujii, B. S. Kawasaki, K. O. Hill, and D. C. Johnson, “Sum-frequency light generation in optical fibers,” Opt. Lett. 5, 48 (1980).
    [CrossRef] [PubMed]
  3. J. M. Gabriagues and L. Fersing, “Second- and third-harmonic generation in optical fibers,” in Digest of XIII International Quantum Electronics Conference (Optical Society of America, Washington, D.C., 1984).
  4. U. Österberg and W. Margulis, “Second-harmonic generation in optical fibers,” in Digest of XIV International Quantum-Electronics Conference (Optical Society of America, Washington, D.C., 1986).
  5. U. Österberg and W. Margulis, “Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber,” Opt. Lett. 11, 516 (1986).
    [CrossRef] [PubMed]
  6. R. H. Stolen and H. W. K. Tom, “Self-organized phase-matched harmonic generation in optical fibers,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1987); Opt. Lett. 12, 505 (1987).
  7. M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
    [CrossRef]
  8. F. P. Payne, “Frequency-doubling in single-mode optical fibers,” in Novel Optoelectronic Devices, M. Adams, ed., Proc. Soc. Photo-Opt. Instrum. Eng.800, 132 (1987).
    [CrossRef]
  9. R. W. Terhune and D. A. Weinberger, “Second-harmonic generation in fibers,” J. Opt. Soc. Am. B 4, 661 (1987).
    [CrossRef]
  10. U. Österberg and W. Margulis, “Experimental studies on efficient frequency doubling in glass optical fibers,” Opt. Lett. 11, 57 (1987).
    [CrossRef]
  11. W. Margulis and U. Österberg, “A four-photon fiber laser,” Opt. Lett. 12, 519 (1987).
    [CrossRef] [PubMed]

1987 (4)

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

R. W. Terhune and D. A. Weinberger, “Second-harmonic generation in fibers,” J. Opt. Soc. Am. B 4, 661 (1987).
[CrossRef]

U. Österberg and W. Margulis, “Experimental studies on efficient frequency doubling in glass optical fibers,” Opt. Lett. 11, 57 (1987).
[CrossRef]

W. Margulis and U. Österberg, “A four-photon fiber laser,” Opt. Lett. 12, 519 (1987).
[CrossRef] [PubMed]

1986 (1)

1983 (1)

Y. Sasaki and Y. Ohmori, “Sum-frequency wave generation in optical fibers,” J. Opt. Commun. 4, 83 (1983).

1980 (1)

Farries, M. C.

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

Fermann, M. E.

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

Fersing, L.

J. M. Gabriagues and L. Fersing, “Second- and third-harmonic generation in optical fibers,” in Digest of XIII International Quantum Electronics Conference (Optical Society of America, Washington, D.C., 1984).

Fujii, Y.

Gabriagues, J. M.

J. M. Gabriagues and L. Fersing, “Second- and third-harmonic generation in optical fibers,” in Digest of XIII International Quantum Electronics Conference (Optical Society of America, Washington, D.C., 1984).

Hill, K. O.

Johnson, D. C.

Kawasaki, B. S.

Margulis, W.

U. Österberg and W. Margulis, “Experimental studies on efficient frequency doubling in glass optical fibers,” Opt. Lett. 11, 57 (1987).
[CrossRef]

W. Margulis and U. Österberg, “A four-photon fiber laser,” Opt. Lett. 12, 519 (1987).
[CrossRef] [PubMed]

U. Österberg and W. Margulis, “Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber,” Opt. Lett. 11, 516 (1986).
[CrossRef] [PubMed]

U. Österberg and W. Margulis, “Second-harmonic generation in optical fibers,” in Digest of XIV International Quantum-Electronics Conference (Optical Society of America, Washington, D.C., 1986).

Ohmori, Y.

Y. Sasaki and Y. Ohmori, “Sum-frequency wave generation in optical fibers,” J. Opt. Commun. 4, 83 (1983).

Österberg, U.

U. Österberg and W. Margulis, “Experimental studies on efficient frequency doubling in glass optical fibers,” Opt. Lett. 11, 57 (1987).
[CrossRef]

W. Margulis and U. Österberg, “A four-photon fiber laser,” Opt. Lett. 12, 519 (1987).
[CrossRef] [PubMed]

U. Österberg and W. Margulis, “Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber,” Opt. Lett. 11, 516 (1986).
[CrossRef] [PubMed]

U. Österberg and W. Margulis, “Second-harmonic generation in optical fibers,” in Digest of XIV International Quantum-Electronics Conference (Optical Society of America, Washington, D.C., 1986).

Payne, D. N.

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

Payne, F. P.

F. P. Payne, “Frequency-doubling in single-mode optical fibers,” in Novel Optoelectronic Devices, M. Adams, ed., Proc. Soc. Photo-Opt. Instrum. Eng.800, 132 (1987).
[CrossRef]

Russel, J.

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

Sasaki, Y.

Y. Sasaki and Y. Ohmori, “Sum-frequency wave generation in optical fibers,” J. Opt. Commun. 4, 83 (1983).

St, P.

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

Stolen, R. H.

R. H. Stolen and H. W. K. Tom, “Self-organized phase-matched harmonic generation in optical fibers,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1987); Opt. Lett. 12, 505 (1987).

Terhune, R. W.

Tom, H. W. K.

R. H. Stolen and H. W. K. Tom, “Self-organized phase-matched harmonic generation in optical fibers,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1987); Opt. Lett. 12, 505 (1987).

Weinberger, D. A.

Electron. Lett. (1)

M. C. Farries, P. St, J. Russel, M. E. Fermann, and D. N. Payne, “Second-harmonic generation in an optical fiber by self-written χ2 grating,” Electron. Lett. 23, 322 (1987).
[CrossRef]

J. Opt. Commun. (1)

Y. Sasaki and Y. Ohmori, “Sum-frequency wave generation in optical fibers,” J. Opt. Commun. 4, 83 (1983).

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

Opt. Lett. (4)

Other (4)

R. H. Stolen and H. W. K. Tom, “Self-organized phase-matched harmonic generation in optical fibers,” in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1987); Opt. Lett. 12, 505 (1987).

F. P. Payne, “Frequency-doubling in single-mode optical fibers,” in Novel Optoelectronic Devices, M. Adams, ed., Proc. Soc. Photo-Opt. Instrum. Eng.800, 132 (1987).
[CrossRef]

J. M. Gabriagues and L. Fersing, “Second- and third-harmonic generation in optical fibers,” in Digest of XIII International Quantum Electronics Conference (Optical Society of America, Washington, D.C., 1984).

U. Österberg and W. Margulis, “Second-harmonic generation in optical fibers,” in Digest of XIV International Quantum-Electronics Conference (Optical Society of America, Washington, D.C., 1986).

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Figures (5)

Fig. 1
Fig. 1

Modified Michelson interferometer for comparing frequency-doubled light from an optical fiber and a KTP crystal; F’s, filters.

Fig. 2
Fig. 2

(a) Interference fringes between green frequency-doubled light from an optical fiber and a KTP crystal. (b) Output from a diode array showing interference fringes (upper trace) and background when one arm was delayed deliberately (2 cm) (lower trace).

Fig. 3
Fig. 3

Measured coherence length of frequency-doubled green light from an optical fiber as a function of input IR power.

Fig. 4
Fig. 4

(Top trace) Chirped spectrum of IR pulse at λ= 1.064 μm, (middle trace) spectrum of frequency-doubled chirped IR pulse in an optical fiber, and (bottom trace) spectrum of frequency-doubled narrow bandwidth IR pulse in an optical fiber.

Fig. 5
Fig. 5

(Dotted line) IR spectrum after a 4-m-long piece of fiber and (solid line) visible spectrum after a prepared 50-cm-long piece of optical fiber, with the dotted-line IR spectrum as input.

Equations (1)

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l χ 2 = ( 2 η n 3 0 / ω 2 I ) 1 / 2 .

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