Abstract

The fluorescence spectra ranging from 400 to 1000 nm were investigated on highly Er3+-doped fiber pumped by a 1.48-μm laser diode. A strong green emission was observed. An investigation of the fluorescence intensity dependence on pump power revealed that the green emission is attributed to successive excited-state absorption through a three-step process and also that saturation of the atomic levels that contribute to the emission occurs.

© 1992 Optical Society of America

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References

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  1. N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
    [CrossRef]
  2. R. I. Laming, S. B. Poole, E. J. Tarbox, Opt. Lett. 13, 1084 (1988).
    [CrossRef] [PubMed]
  3. N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.
  4. P. A. Krug, M. G. Sceats, G. R Atkins, S. C. Guy, S. B. Poole, Opt. Lett. 16, 1976 (1991).
    [CrossRef] [PubMed]
  5. P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.
  6. G. H. Dieke, Spectra and Energy hevels of Rare-Earth Ions in Crystals (Interscience, New York, 1968).
  7. L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
    [CrossRef]

1991

1990

N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
[CrossRef]

1988

1972

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Atkins, G. R

Blixt, P.

P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.

Carlnas, T.

P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.

Dieke, G. H.

G. H. Dieke, Spectra and Energy hevels of Rare-Earth Ions in Crystals (Interscience, New York, 1968).

Guggenheim, H. J.

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Guy, S. C.

Jaskorzynska, B.

P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.

Johnson, L. F.

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Kagi, N.

N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
[CrossRef]

N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.

Krug, P. A.

Laming, R. I.

Nakamura, K.

N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
[CrossRef]

N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.

Nilsson, J.

P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.

Ostermayer, F. W.

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Oyobe, A.

N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
[CrossRef]

N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.

Poole, S. B.

Rich, T. C.

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Sceats, M. G.

Suyama, M.

N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.

Tarbox, E. J.

IEEE Photon. Technol Lett.

N. Kagi, A. Oyobe, K. Nakamura, IEEE Photon. Technol Lett. 2, 559 (1990).
[CrossRef]

J. Appl. Phys.

L. F. Johnson, H. J. Guggenheim, T. C. Rich, F. W. Ostermayer, J. Appl. Phys. 43, 1125 (1972).
[CrossRef]

Opt. Lett.

Other

N. Kagi, A. Oyobe, M. Suyama, K. Nakamura, in Digest of International Conference on Integrated Optics and Optical Fiber Communication (Japan Institute of Electronics, Information, and Communication Engineers, Kobe, Japan, 1989), paper 20A4-5.

P. Blixt, J. Nilsson, T. Carlnas, B. Jaskorzynska, in Digest of Meeting on Optical Amplifiers and Their Applications (Optical Society of America, Washington, D.C., 1991), paper WD3.

G. H. Dieke, Spectra and Energy hevels of Rare-Earth Ions in Crystals (Interscience, New York, 1968).

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Figures (3)

Fig. 1
Fig. 1

Fluorescence spectra from highly doped EDF pumped by a 1.48-μm laser diode. The pump power was 55 mW.

Fig. 2
Fig. 2

Energy-level diagram of Er3+ ions in a host material. The mechanism of the radiative transitions observed in our measurements is also shown. The solid up arrows, the solid down arrows, and the dashed arrows represent the pumping and ESA process, the radiative transitions, and the nonradiative transitions, respectively.

Fig. 3
Fig. 3

Dependence of the integrated fluorescence intensities of 0.98-μm and green emissions on pump power. The open and filled circles represent 0.98-μm and green emissions, respectively. In the case of 0.98-μm emission, a linear power law exists over the measured pump range. In the case of green emission, the power law varies with the pump level; it is 3 [curve (1)] and 1.5 [curve (2)].

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