Abstract

An efficient double-pulse Ho:Tm:YLF 2µm laser with total Q-switched output energy of 600 mJ has been demonstrated. A double-pulse pair is obtained per pump pulse. By operation of the laser in a double-pulse format, the residual energy stored among the Tm ions is transferred to the Ho atoms that were de-excited by the extraction of the first Q-switched pulse. Thus, the overall laser efficiency is increased by 61%.

© 2003 Optical Society of America

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References

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1998

1997

B. M. Walsh, N. P. Barnes, and B. D. Bartolo, J. Lumin. 75, 89 (1997).
[CrossRef]

1996

1994

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

1991

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

Barnes, N. P.

J. Yu, U. N. Singh, N. P. Barnes, and M. Petros, Opt. Lett. 23, 780 (1998).
[CrossRef]

B. M. Walsh, N. P. Barnes, and B. D. Bartolo, J. Lumin. 75, 89 (1997).
[CrossRef]

N. P. Barnes, W. J. Rodriguez, and B. M. Walsh, J. Opt. Soc. Am. B 13, 2872 (1996).
[CrossRef]

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

Bartolo, B. D.

B. M. Walsh, N. P. Barnes, and B. D. Bartolo, J. Lumin. 75, 89 (1997).
[CrossRef]

Bowman, S. R.

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

Braud, A.

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

Bruneau, D.

Delmonte, S.

Feldman, B. J.

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

Kavaya, M. J.

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Keller, V. W.

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Killinger, D. K.

Lobl, E. S.

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Pelon, J.

Petros, M.

J. Yu, U. N. Singh, N. P. Barnes, and M. Petros, Opt. Lett. 23, 780 (1998).
[CrossRef]

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

Rodriguez, W. J.

Rothermel, J.

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Searles, S.

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

Singh, U. N.

Spiers, G. D.

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Taczak, T. M.

Walsh, B. M.

B. M. Walsh, N. P. Barnes, and B. D. Bartolo, J. Lumin. 75, 89 (1997).
[CrossRef]

N. P. Barnes, W. J. Rodriguez, and B. M. Walsh, J. Opt. Soc. Am. B 13, 2872 (1996).
[CrossRef]

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

Winings, M. J.

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

Yu, J.

J. Yu, U. N. Singh, N. P. Barnes, and M. Petros, Opt. Lett. 23, 780 (1998).
[CrossRef]

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

Appl. Opt.

IEEE J. Quantum Electron.

S. R. Bowman, M. J. Winings, S. Searles, and B. J. Feldman, IEEE J. Quantum Electron. 27, 1129 (1991).
[CrossRef]

J. Lumin.

B. M. Walsh, N. P. Barnes, and B. D. Bartolo, J. Lumin. 75, 89 (1997).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Lett.

Proc. SPIE

M. J. Kavaya, G. D. Spiers, E. S. Lobl, J. Rothermel, and V. W. Keller, Proc. SPIE 2214, 237 (1994).
[CrossRef]

Other

A. Braud, J. Yu, M. Petros, B. M. Walsh, and N. P. Barnes, “Pump–probe technique for direct measurement of upper laser level population dynamics in a Ho:Tm:YLiF4 2-µm laser,” Opt. Commun. (to be published).

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Figures (4)

Fig. 1
Fig. 1

Ho:Tm:YLF laser system schematic.

Fig. 2
Fig. 2

Relative Ho upper-laser-level I57 population during the pumping and lasing periods. The pump pulse starts from t=0 and lasts 1 ms.

Fig. 3
Fig. 3

Oscillator double-pulse laser energy as a function of the time interval between the two pulses.

Fig. 4
Fig. 4

Amplifier energy as a function of incident pump energy.

Tables (1)

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Table 1 Oscillator Output Energy Distribution between the Two Pulsesa

Equations (2)

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Q=Z3F4Z5I8Z3H6Z5I7,
ZM=igi exp-Ei/KT.

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