Abstract

We demonstrate a compact core-pumped 2 µm Tm3+, Ho3+-doped all-fiber laser passively Q-switched with an antimony-based saturable absorber. The 20 ns pulses are the shortest Q-switched pulses from a fiber laser operating beyond 1850 nm and were produced at a repetition rate of 57 kHz and pulse energy of 15 µJ using a short-length (4 ns) cavity. The large absorber modulation depth of ~70% together with transient gain compression is shown to provide an efficient mechanism for Q-switched pulse shortening.

© 2008 Optical Society of America

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  1. R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
    [CrossRef]
  2. S. D. Jackson, F. Bugge, and G. Erbert, "High power and highly efficient diode-cladding-pumped Ho3+-doped silica fiber lasers," Opt. Lett. 32, 3349-3351 (2007).
    [CrossRef] [PubMed]
  3. Y. Tsang, B. Richards, D. Binks, J. Lousteau, and A. Jha, "Tm3+/Ho3+ co-doped tellurite fiber laser," Opt. Lett. 33, 1282-1284 (2008).
    [CrossRef] [PubMed]
  4. S. D. Jackson, F. Bugge, and G. Erbert, "High power and highly efficient Tm3+-doped silica fiber lasers pumped with diode lasers operating at 1150 nm," Opt. Lett. 32, 2873-2875 (2007).
    [CrossRef] [PubMed]
  5. S. D. Jackson, "Passively Q-switched Tm3+-doped silica fiber lasers," Appl. Opt. 46, 3311-3317 (2007).
    [CrossRef] [PubMed]
  6. M. Eichorn, S. D. Jackson, "High-pulse-energy actively Q-switched Tm3+-doped silica 2 μm fiber laser pumped at 792 nm," Opt. Lett. 32, 2780-2782 (2007).
    [CrossRef]
  7. M. Eichorn, S. D. Jackson, "High-pulse-energy, actively Q-switched Tm3+,Ho3+-codoped silica 2 μm fiber laser," Opt. Lett. 33, 1044-1046 (2008).
    [CrossRef]
  8. J. J. Zayhowski and C. DillIII, "Diode-pumped passively Q-switched picosecond microchip lasers," Opt. Lett. 19, 1427-1429 (1994).
    [CrossRef] [PubMed]
  9. G. J. Spühler, R. Paschotta, R. Fluck, B. Braun, M. Moser, G. Zhang, E. Gini, and U. Keller, "Experimentally confirmed design guidelines for passively Q-switched microchip lasers using semiconductor saturable absorbers," J. Opt. Soc. Am. B 16, 376-388 (1999).
    [CrossRef]
  10. T. Hakulinen, and O. G. Okhotnikov, "8 ns fiber laser Q-switched by the resonant saturable asbsorber," Opt. Lett. 32, 2677-2679 (2007).
    [CrossRef] [PubMed]
  11. R. Herda, S. Kivistö, and O. G. Okhotnikov, "Dynamic gain induced pulse shortening in Q-switched lasers," Opt. Lett. 33, 1011-1013 (2008).
    [CrossRef] [PubMed]
  12. A. A. Fotiadi, P. Mégret, and M. Blondel, "Dynamics of a self-Q-switched fiber laser with a Rayleigh-stimulated Brillouin scattering ring mirror," Opt. Lett. 29, 1078-1080 (2004).
    [CrossRef] [PubMed]
  13. M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarkson, 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]
  14. M. Salhi, A. Hideur, T. Chartier, M. Brunel, G. Martel, C. Ozkul, and F. Sanchez, "Evidence of Brillouin scattering in an ytterbium-doped double-clad fiber laser," Opt. Lett. 27, 1294-1296 (2002).
    [CrossRef]
  15. A. E. Siegman, Lasers. (Univ. Science Books, 1986).
  16. J. B. Khurgin, F. Jin, G. Solyar, C. Wang, and S. Trivedi, "Cost-effective low timing jitter passively Q-switched diode-pumped solid-state laser with composite pumping pulses," Appl. Opt. 41, 1095-1097 (2002).
    [CrossRef] [PubMed]

2008 (3)

2007 (5)

2004 (1)

2002 (3)

2000 (1)

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

1999 (1)

1994 (1)

Binks, D.

Blondel, M.

Braun, B.

Brunel, M.

Bugge, F.

Chardon, A. M.

Chartier, T.

Clarkson, W. A.

M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarkson, 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]

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Dill, C.

Eichorn, M.

Erbert, G.

Fluck, R.

Fotiadi, A. A.

Gini, E.

Girard, S.

Grudinin, A. B.

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Hakulinen, T.

Hanna, D. C.

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Hayward, R. A.

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Herda, R.

Hideur, A.

Jackson, S. D.

Jha, A.

Jin, F.

Keller, U.

Khurgin, J. B.

Kivistö, S.

Laroche, M.

Lousteau, J.

Martel, G.

Mégret, P.

Moncorgé, R.

Moser, M.

Nilsson, J.

M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarkson, 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]

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Okhotnikov, O. G.

Ozkul, C.

Paschotta, R.

Richards, B.

Salhi, M.

Sanchez, F.

Shepherd, D. P.

Solyar, G.

Spühler, G. J.

Trivedi, S.

Tsang, Y.

Turner, P. W.

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

Wang, C.

Zayhowski, J. J.

Zhang, G.

Appl. Opt. (2)

Electron. Lett. (1)

R. A. Hayward, W. A. Clarkson, P. W. Turner, J. Nilsson, A. B. Grudinin, and D. C. Hanna, "Efficient cladding-pumped Tm-doped silica fibre laser with high power single mode output at 2 µm," Electron. Lett. 36, 711-712 (2000).
[CrossRef]

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

Opt. Lett. (11)

T. Hakulinen, and O. G. Okhotnikov, "8 ns fiber laser Q-switched by the resonant saturable asbsorber," Opt. Lett. 32, 2677-2679 (2007).
[CrossRef] [PubMed]

R. Herda, S. Kivistö, and O. G. Okhotnikov, "Dynamic gain induced pulse shortening in Q-switched lasers," Opt. Lett. 33, 1011-1013 (2008).
[CrossRef] [PubMed]

A. A. Fotiadi, P. Mégret, and M. Blondel, "Dynamics of a self-Q-switched fiber laser with a Rayleigh-stimulated Brillouin scattering ring mirror," Opt. Lett. 29, 1078-1080 (2004).
[CrossRef] [PubMed]

M. Laroche, A. M. Chardon, J. Nilsson, D. P. Shepherd, W. A. Clarkson, 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]

M. Salhi, A. Hideur, T. Chartier, M. Brunel, G. Martel, C. Ozkul, and F. Sanchez, "Evidence of Brillouin scattering in an ytterbium-doped double-clad fiber laser," Opt. Lett. 27, 1294-1296 (2002).
[CrossRef]

S. D. Jackson, F. Bugge, and G. Erbert, "High power and highly efficient diode-cladding-pumped Ho3+-doped silica fiber lasers," Opt. Lett. 32, 3349-3351 (2007).
[CrossRef] [PubMed]

Y. Tsang, B. Richards, D. Binks, J. Lousteau, and A. Jha, "Tm3+/Ho3+ co-doped tellurite fiber laser," Opt. Lett. 33, 1282-1284 (2008).
[CrossRef] [PubMed]

S. D. Jackson, F. Bugge, and G. Erbert, "High power and highly efficient Tm3+-doped silica fiber lasers pumped with diode lasers operating at 1150 nm," Opt. Lett. 32, 2873-2875 (2007).
[CrossRef] [PubMed]

M. Eichorn, S. D. Jackson, "High-pulse-energy actively Q-switched Tm3+-doped silica 2 μm fiber laser pumped at 792 nm," Opt. Lett. 32, 2780-2782 (2007).
[CrossRef]

M. Eichorn, S. D. Jackson, "High-pulse-energy, actively Q-switched Tm3+,Ho3+-codoped silica 2 μm fiber laser," Opt. Lett. 33, 1044-1046 (2008).
[CrossRef]

J. J. Zayhowski and C. DillIII, "Diode-pumped passively Q-switched picosecond microchip lasers," Opt. Lett. 19, 1427-1429 (1994).
[CrossRef] [PubMed]

Other (1)

A. E. Siegman, Lasers. (Univ. Science Books, 1986).

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Figures (6)

Fig. 1.
Fig. 1.

Schematic of the passively Q-switched Tm3+, Ho3+-doped aluminosilicate fiber laser.

Fig. 2.
Fig. 2.

Low intensity reflectivity of the SAM. The arrows show the operation wavelengths of the laser. The resonant wavelength is 1970 nm.

Fig. 4.
Fig. 4.

(a) The effect of the pump power and operation wavelength (hence ΔRSAM) on the pulse width. Dashed lines show the pulse width calculated from theory without taking into account the gain induced pulse compression. (b) The effect of the modulation depth on pulse compression at different power levels exceeding the threshold power. Solid lines are the fittings according to egn. (8) in [11].

Fig. 3.
Fig. 3.

Average output power in CW operation with HR mirror and Q-switched operation with SAM at the wavelengths of (a) 1948 nm corresponding to the absorber modulation depth of ΔRSAM=17%, and (b) 1970 nm corresponding to ΔRSAM=70%.

Fig. 5.
Fig. 5.

The effect of the pump power and operation wavelength (hence ΔRSAM) on the Q-switched pulse energy and repetition rate. Solid lines are the numerical fittings, and the dashed lines the near-threshold limit values for the pulse energy.

Fig. 6.
Fig. 6.

Oscilloscope trace of a 19.6 ns Q-switched pulse observed at the resonant wavelength of the SAM. The insets show the narrow optical spectra at the four operating wavelengths (right) and the jitter vs. repetition rate of the laser (left).

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