Abstract

We report active Q-switching of an all-fiber laser using a Bragg grating based acousto-optic modulator. Q-switching is performed by modulating a fiber Bragg grating with an extensional acoustic wave. The acoustic wave modulates periodically the effective index profile of the FBG and changes its reflection features. This allows controlling the Q-factor of the cavity. Using 1 m of 300 ppm erbium-doped fiber and a maximum pump power of 180 mW, Q-switch pulses of 10 W of peak power and 82 ns wide were generated. The pulse repetition rate of the laser can be continuously varied from few Hz up to 62.5 kHz.

© 2006 Optical Society of America

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  1. M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarckson, S. Girard and R. Moncorgé, "Compact diode-pumped passively Q-switched tunable Er-Yb double-clad fiber laser," Opt. Lett. 27, 1980-1982 (2002).
    [CrossRef]
  2. V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
    [CrossRef]
  3. A. Fotiadi, A. Kurkov, I. Razdobreev, "All-fiber passively Q-switched Yterbium laser," CLEO/ Europe-EQEC 2005, Technical Digest, CJ2-3, Munich, Germany (2005).
  4. R. Paschotta, R. Häring, E. Gini, H. Melchior, U. Keller, H. L. Offerhaus and D. J. Richardson, "Passively Q-switched 0.1-mJ fiber laser system at 1.53 μm," Opt. Lett. 24, 388-390 (1999).
    [CrossRef]
  5. H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
    [CrossRef]
  6. J. A. Álvarez-Chávez, H. L. Offerhaus, J. Nilsson, P. W. Turner, W. A: Clarckson and D. J. Richardson, "High-energy, high-power ytterbium-doped Q-switched fiber laser," Opt. Lett. 25, 37-39 (2000).
    [CrossRef]
  7. A. Chandonnet and G. Larose, "High-power Q-switched erbium fiber laser using an all-fiber intensity modulator," Opt. Eng. 32, 2031-2035 (1993).
    [CrossRef]
  8. D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
    [CrossRef]
  9. D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
    [CrossRef]
  10. N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
    [CrossRef]
  11. P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
    [CrossRef] [PubMed]
  12. W. F. Liu, P. St. J. Russell, L. Dong, "Acousto-optic superlattice modulator using a fiber Bragg grating," Opt. Lett. 22, 1515-1517 (1997).
    [CrossRef]
  13. P. St. J. Russell and W. F. Liu, "Acousto-optic superlattice modulation in fiber Bragg gratings," J. Opt. Soc. Am. A. 17, 1421-1429, (2000).
    [CrossRef]
  14. M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
    [CrossRef]
  15. H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
    [CrossRef]
  16. J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
    [CrossRef]
  17. G. P. Lees and T. P. Newson, "Diode pumped high power simultaneously Q-switch and self-mode-locked erbium doped fiber laser," Electron. Lett. 32, 332-333 (1996).
    [CrossRef]
  18. P. Myslinski, J. Chrostowski, J. A. Koningstein and J. R. Simpson, "Self-mode locking in a Q-switched erbium-doped fiber laser," Appl. Opt. 32, 286-290 (1993).
    [CrossRef] [PubMed]

2005 (4)

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
[CrossRef] [PubMed]

2004 (1)

V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
[CrossRef]

2002 (2)

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarckson, S. Girard and R. Moncorgé, "Compact diode-pumped passively Q-switched tunable Er-Yb double-clad fiber laser," Opt. Lett. 27, 1980-1982 (2002).
[CrossRef]

2000 (3)

D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
[CrossRef]

J. A. Álvarez-Chávez, H. L. Offerhaus, J. Nilsson, P. W. Turner, W. A: Clarckson and D. J. Richardson, "High-energy, high-power ytterbium-doped Q-switched fiber laser," Opt. Lett. 25, 37-39 (2000).
[CrossRef]

P. St. J. Russell and W. F. Liu, "Acousto-optic superlattice modulation in fiber Bragg gratings," J. Opt. Soc. Am. A. 17, 1421-1429, (2000).
[CrossRef]

1999 (1)

1998 (1)

H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
[CrossRef]

1997 (1)

1996 (1)

G. P. Lees and T. P. Newson, "Diode pumped high power simultaneously Q-switch and self-mode-locked erbium doped fiber laser," Electron. Lett. 32, 332-333 (1996).
[CrossRef]

1993 (2)

A. Chandonnet and G. Larose, "High-power Q-switched erbium fiber laser using an all-fiber intensity modulator," Opt. Eng. 32, 2031-2035 (1993).
[CrossRef]

P. Myslinski, J. Chrostowski, J. A. Koningstein and J. R. Simpson, "Self-mode locking in a Q-switched erbium-doped fiber laser," Appl. Opt. 32, 286-290 (1993).
[CrossRef] [PubMed]

1988 (1)

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

Álvarez-Chávez, J. A.

Andrés, M. V.

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
[CrossRef] [PubMed]

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Andrés, M.V.

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

Blake, J. N.

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

Chandonnet, A.

A. Chandonnet and G. Larose, "High-power Q-switched erbium fiber laser using an all-fiber intensity modulator," Opt. Eng. 32, 2031-2035 (1993).
[CrossRef]

Chardon, A. M.

Chrostowski, J.

Clarckson, W. A.

Cruz, J. L.

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Cruz, J.L.

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

Delgado-Pinar, M.

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

Díez, A.

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
[CrossRef] [PubMed]

Dong, L.

Duchowicz, R.

P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
[CrossRef] [PubMed]

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Engan, H. E.

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

Gini, E.

Girard, S.

Häring, R.

Heras, C. D.

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

Huang, D. W.

D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
[CrossRef]

Kee, H. H.

H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
[CrossRef]

Keller, U.

Kim, B. Y.

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

Kiryanov, A. V.

V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
[CrossRef]

Koningstein, J. A.

Laroche, M.

Larose, G.

A. Chandonnet and G. Larose, "High-power Q-switched erbium fiber laser using an all-fiber intensity modulator," Opt. Eng. 32, 2031-2035 (1993).
[CrossRef]

Lees, G. P.

H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
[CrossRef]

G. P. Lees and T. P. Newson, "Diode pumped high power simultaneously Q-switch and self-mode-locked erbium doped fiber laser," Electron. Lett. 32, 332-333 (1996).
[CrossRef]

Liu, W. F.

P. St. J. Russell and W. F. Liu, "Acousto-optic superlattice modulation in fiber Bragg gratings," J. Opt. Soc. Am. A. 17, 1421-1429, (2000).
[CrossRef]

D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
[CrossRef]

W. F. Liu, P. St. J. Russell, L. Dong, "Acousto-optic superlattice modulator using a fiber Bragg grating," Opt. Lett. 22, 1515-1517 (1997).
[CrossRef]

Melchior, H.

Moncorgé, R.

Mora, J.

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Myslinski, P.

Newson, T. P.

H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
[CrossRef]

G. P. Lees and T. P. Newson, "Diode pumped high power simultaneously Q-switch and self-mode-locked erbium doped fiber laser," Electron. Lett. 32, 332-333 (1996).
[CrossRef]

Nilsson, J.

Offerhaus, H. L.

Paschotta, R.

Pelayo, J.

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

Pellejer, E.

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

Pérez-Millán, P.

Philippov, V. N.

V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
[CrossRef]

Richardson, D. J.

Russell, P. St. J.

P. St. J. Russell and W. F. Liu, "Acousto-optic superlattice modulation in fiber Bragg gratings," J. Opt. Soc. Am. A. 17, 1421-1429, (2000).
[CrossRef]

W. F. Liu, P. St. J. Russell, L. Dong, "Acousto-optic superlattice modulator using a fiber Bragg grating," Opt. Lett. 22, 1515-1517 (1997).
[CrossRef]

Russo, N. A.

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Russo, N.A.

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

Shaw, H. J.

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

Shepherd, D. P.

Simpson, J. R.

Subías, J. M.

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

Turner, P. W.

Unger, S.

V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
[CrossRef]

Villuendas, F.

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

Yang, C. C.

D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
[CrossRef]

Zalvidea, D.

P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, "Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating," Opt. Express 13, 5046-5051 (2005).
[CrossRef] [PubMed]

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

Appl. Opt. (1)

Electron. Lett. (2)

G. P. Lees and T. P. Newson, "Diode pumped high power simultaneously Q-switch and self-mode-locked erbium doped fiber laser," Electron. Lett. 32, 332-333 (1996).
[CrossRef]

H. H. Kee, G. P. Lees and T. P. Newson, "Narrow linewidth CW and Q-switched erbium-doped fibre loop laser," Electron. Lett. 34, 1318-1319 (1998).
[CrossRef]

IEEE Photonics Technol. Lett. (4)

V. N. Philippov, A. V. Kiryanov and S. Unger, "Advanced configuration of erbium fiber passively Q-switched laser with Co2+:ZnSe crystal as saturable absorber," IEEE Photonics Technol. Lett. 16, 57-59 (2004).
[CrossRef]

D. W. Huang, W. F. Liu and C. C. Yang, "Q-switched all-fiber laser with an acoustically modulated fiber attenuator," IEEE Photonics Technol. Lett. 12, 1153-1155 (2000).
[CrossRef]

M. Delgado-Pinar, J. Mora, A. Díez, J. L. Cruz and M. V. Andrés, "Wavelength-switchable fiber laser using acoustic waves," IEEE Photonics Technol. Lett. 17, 552-554 (2005).
[CrossRef]

J. M. Subías, J. Pelayo, F. Villuendas, C. D. Heras, E. Pellejer, "Very high resolution optical spectrometry by stimulated brillouin scattering," IEEE Photonics Technol. Lett. 17, 855-857 (2005).
[CrossRef]

J. Lightwave Technol. (1)

H. E. Engan, B. Y. Kim, J. N. Blake, H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

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

P. St. J. Russell and W. F. Liu, "Acousto-optic superlattice modulation in fiber Bragg gratings," J. Opt. Soc. Am. A. 17, 1421-1429, (2000).
[CrossRef]

Opt. Commun. (2)

D. Zalvidea, N.A. Russo, R. Duchowicz, M. Delgado-Pinar, A. Díez, J.L. Cruz and M.V. Andrés, "High-repetition rate acoustic-induced Q-switched all-fiber laser," Opt. Commun. 244, 315-319 (2005).
[CrossRef]

N. A. Russo, R. Duchowicz, J. Mora, J. L. Cruz and M. V. Andrés, "High-efficiency Q-switched erbium fiber laser using a Bragg grating-based modulator," Opt. Commun. 210, 361-366 (2002).
[CrossRef]

Opt. Eng. (1)

A. Chandonnet and G. Larose, "High-power Q-switched erbium fiber laser using an all-fiber intensity modulator," Opt. Eng. 32, 2031-2035 (1993).
[CrossRef]

Opt. Express (1)

Opt. Lett. (4)

Other (1)

A. Fotiadi, A. Kurkov, I. Razdobreev, "All-fiber passively Q-switched Yterbium laser," CLEO/ Europe-EQEC 2005, Technical Digest, CJ2-3, Munich, Germany (2005).

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Figures (7)

Fig. 1.
Fig. 1.

The Bragg grating-based acousto-optic modulator.

Fig. 2.
Fig. 2.

(a) Reflection spectra for three different frequencies of the RF-signal and amplitudes (from top to bottom) of 4, 13 and 38 V. (b) Reflection spectra for three voltage amplitudes of the RF signal and a fixed frequency of 1.017 MHz. (c) Wavelength shift from the Bragg condition of the first-, second- and third-order sidebands, as a function of frequency. (d) Peak reflectivity of the central band (black) and first- (red), second- (blue) and third-order (green) sideband as a function of the RF voltage amplitude applied to the piezoelectric. The scale of vertical axis in (a) and (b) is linear.

Fig. 3.
Fig. 3.

Time response of the BG-AOM. (top) RF electric signal applied to the piezoelectric disk and (bottom) the optical signal reflected by one of the sidebands of the modulator.

Fig. 4.
Fig. 4.

The Q-switched all-fiber laser arrangement.

Fig. 5.
Fig. 5.

Laser emission spectra for three frequencies of the acoustic wave (blue). Spectrum when the RF generator was off and the output grating was tuned as in 1 MHz (red). The pump power in all cases was 180 mW. Inset: emission spectrum measured with resolution of 0.08 pm.

Fig. 6.
Fig. 6.

(a) Laser output when operating at 20 kHz (black). Rectangular electric signal used to modulate the RF signal (red). (b) Typical pulse shape, showing self-mode-locking

Fig. 7.
Fig. 7.

(a) Peak power and pulse width as a function of pump power. Repetition rate 1 kHz. (b) Peak power and pulse width as a function of repetition rate. Pump power 180 mW.

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