Abstract

We have prepared an optical fiber that produces efficient (0.24%) second-harmonic conversion by using mode-locked 1.064-μm laser pulses along with a harmonic seeding beam. The effective coherence length increased to 35 cm as compared with only a few centimeters in fibers prepared with mode-locked Q-switched pulses. We show that the input bandwidth of the pump pulse imposes a fundamental limit on the effective coherence length and that this length can be severely reduced by competing nonlinear effects.

© 1988 Optical Society of America

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References

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  1. U. Osterberg, W. Margulis, Opt. Lett. 11, 516 (1986); Opt. Lett. 12, 57 (1987).
    [Crossref] [PubMed]
  2. R. H. Stolen, H. W. K. Tom, in Digest of Conference on Lasers and Electronics (Optical Society of America, Washington, D.C., 1987), paper ThL2; Opt. Lett. 12, 585 (1987).
    [PubMed]
  3. M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
    [Crossref]
  4. U. Osterberg, Ph. D. dissertation (Royal Institute of Technology, Stockholm, Sweden, 1987).
  5. R. H. Stolen, Chinlon Lin, Phys. Rev. A 17, 1448 (1978); R. Alfano, P. L. Baldeck, F. Raecah, P. P. Ho, Appl. Opt. 26, 3491 (1987); M. N. Islam, L. F. Mollenauer, R. H. Stolen, J. R. Simpson, H. T. Shang, Opt. Lett. 12, 625 (1987).
    [Crossref] [PubMed]
  6. W. J. Tomlinson, R. H. Stolen, C. V. Shank, J. Opt. Soc. Am. B 1, 139 (1984).
    [Crossref]
  7. P. St. J. Russell, Department of Electronics and Computer Science, University of Southampton, Southampton S09 5NH England (personal communication).

1987 (1)

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

1986 (1)

1984 (1)

1978 (1)

R. H. Stolen, Chinlon Lin, Phys. Rev. A 17, 1448 (1978); R. Alfano, P. L. Baldeck, F. Raecah, P. P. Ho, Appl. Opt. 26, 3491 (1987); M. N. Islam, L. F. Mollenauer, R. H. Stolen, J. R. Simpson, H. T. Shang, Opt. Lett. 12, 625 (1987).
[Crossref] [PubMed]

Farries, M. O.

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

Fermann, M. E.

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

Lin, Chinlon

R. H. Stolen, Chinlon Lin, Phys. Rev. A 17, 1448 (1978); R. Alfano, P. L. Baldeck, F. Raecah, P. P. Ho, Appl. Opt. 26, 3491 (1987); M. N. Islam, L. F. Mollenauer, R. H. Stolen, J. R. Simpson, H. T. Shang, Opt. Lett. 12, 625 (1987).
[Crossref] [PubMed]

Margulis, W.

Osterberg, U.

U. Osterberg, W. Margulis, Opt. Lett. 11, 516 (1986); Opt. Lett. 12, 57 (1987).
[Crossref] [PubMed]

U. Osterberg, Ph. D. dissertation (Royal Institute of Technology, Stockholm, Sweden, 1987).

Payne, D. N.

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

Russell, P. St. J.

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

P. St. J. Russell, Department of Electronics and Computer Science, University of Southampton, Southampton S09 5NH England (personal communication).

Shank, C. V.

Stolen, R. H.

W. J. Tomlinson, R. H. Stolen, C. V. Shank, J. Opt. Soc. Am. B 1, 139 (1984).
[Crossref]

R. H. Stolen, Chinlon Lin, Phys. Rev. A 17, 1448 (1978); R. Alfano, P. L. Baldeck, F. Raecah, P. P. Ho, Appl. Opt. 26, 3491 (1987); M. N. Islam, L. F. Mollenauer, R. H. Stolen, J. R. Simpson, H. T. Shang, Opt. Lett. 12, 625 (1987).
[Crossref] [PubMed]

R. H. Stolen, H. W. K. Tom, in Digest of Conference on Lasers and Electronics (Optical Society of America, Washington, D.C., 1987), paper ThL2; Opt. Lett. 12, 585 (1987).
[PubMed]

Tom, H. W. K.

R. H. Stolen, H. W. K. Tom, in Digest of Conference on Lasers and Electronics (Optical Society of America, Washington, D.C., 1987), paper ThL2; Opt. Lett. 12, 585 (1987).
[PubMed]

Tomlinson, W. J.

Electron. Lett. (1)

M. O. Farries, P. St. J. Russell, M. E. Fermann, D. N. Payne, Electron. Lett. 23, 322 (1987).
[Crossref]

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

Opt. Lett. (1)

Phys. Rev. A (1)

R. H. Stolen, Chinlon Lin, Phys. Rev. A 17, 1448 (1978); R. Alfano, P. L. Baldeck, F. Raecah, P. P. Ho, Appl. Opt. 26, 3491 (1987); M. N. Islam, L. F. Mollenauer, R. H. Stolen, J. R. Simpson, H. T. Shang, Opt. Lett. 12, 625 (1987).
[Crossref] [PubMed]

Other (3)

P. St. J. Russell, Department of Electronics and Computer Science, University of Southampton, Southampton S09 5NH England (personal communication).

R. H. Stolen, H. W. K. Tom, in Digest of Conference on Lasers and Electronics (Optical Society of America, Washington, D.C., 1987), paper ThL2; Opt. Lett. 12, 585 (1987).
[PubMed]

U. Osterberg, Ph. D. dissertation (Royal Institute of Technology, Stockholm, Sweden, 1987).

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Figures (1)

Fig. 1
Fig. 1

SH intensity versus SH wavelength detuning. The solid curve is normalized SH from fiber prepared with mode-locked 1.064-μm and 532-nm seeding fields. The dashed curve is the spectrum of the 532-nm seed pulse. The dotted curve is a fit to the solid curve using Lcoh = 34.6 cm and Eq. (5).

Equations (7)

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P dc ( z ) = 3 4 χ 3 E ( ω 1 ) E ( ω 2 ) E * ( ω 1 + ω 2 ) cos Δ k z ,
P dc ( z ) = 3 4 χ 3 E 2 ( ω 0 ) E * ( 2 ω 0 ) d Δ k u ( Δ k ) cos Δ k z ,
P dc ( z ) = 3 4 χ 3 E 2 ( ω 0 ) E * ( 2 ω 0 ) cos Δ k ( ω 0 ) z × exp [ ( z / L coh ) 2 ] ,
[ L coh ] 1 = 1 2 ( a b ) δ ( ω ) ,
E ( 2 ω ) = 0 L exp { i [ Δ k ( ω ) Δ k ( ω 0 ) ] z } exp [ ( z / L coh ) 2 ] d z .
I 2 ω / I 2 ω 0 = exp ( y 2 ) + 2 π × { k = 1 1 [ 1 · 3 · , ( 2 k 1 ) ] ( 1 ) k 1 ( y ) 2 k 1 } 2 ,
I 2 ω / I 2 ω 0 = sin 2 ( y ) / y 2 ,

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