Abstract

Widely tunable subnanosecond Ti:sapphire laser radiation pumped with a cw Q-switched laser-diode-pumped Nd:YAG laser has been demonstrated in a simple laser system with a configuration of variable cavity length. Laser wavelengths can be continuously tuned by adjustment of the rf of an intracavity acousto-optic tunable filter with a computer through the whole range of the laser gain. During tuning of the whole spectral range, there is no need to realign any optics in the laser, except for moving the mirror to track the change of the rf. The peak powers of the output pulses at a pump level of 300  mW are comparable with those of conventional tunable picosecond Ti:sapphire lasers at a cw pump level of almost 10  W.

© 1999 Optical Society of America

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1998 (1)

1997 (1)

K. Akagawa, S. Wada, and H. Tashiro, Appl. Phys. Lett. 70, 1213 (1997).
[CrossRef]

1996 (1)

1993 (1)

H. Sabert and E. Brinkmeyer, Electron. Lett. 29, 2122 (1993).
[CrossRef]

1992 (1)

J. D. Kafka, M. L. Watts, and J. J. Pieterse, IEEE J. Quantum Electron. 28, 2151 (1992).
[CrossRef]

1989 (1)

1988 (2)

P. A. Schulz, IEEE J. Quantum Electron. 24, 1039 (1988).
[CrossRef]

F. V. Kowalski, S. J. Shattil, and P. D. Hale, Appl. Phys. Lett. 53, 734 (1988).
[CrossRef]

1971 (1)

D. J. Taylor, S. E. Harris, and S. T. K. Nieh, Appl. Phys. Lett. 19, 269 (1971).
[CrossRef]

Akagawa, K.

K. Akagawa, S. Wada, and H. Tashiro, Appl. Phys. Lett. 70, 1213 (1997).
[CrossRef]

S. Wada, K. Akagawa, and H. Tashiro, Opt. Lett. 21, 731 (1996).
[CrossRef] [PubMed]

S. Wada, K. Akagawa, and H. Tashiro, in Digest of Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim’97) (Optical Society of America, Washington, D.C., 1997), p. 115.

Brinkmeyer, E.

H. Sabert and E. Brinkmeyer, Electron. Lett. 29, 2122 (1993).
[CrossRef]

Chen, Z. J.

Grudinin, A. B.

Hale, P. D.

F. V. Kowalski, S. J. Shattil, and P. D. Hale, Appl. Phys. Lett. 53, 734 (1988).
[CrossRef]

Harris, S. E.

D. J. Taylor, S. E. Harris, and S. T. K. Nieh, Appl. Phys. Lett. 19, 269 (1971).
[CrossRef]

Jung, I. D.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Kaertner, F. X.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Kafka, J. D.

J. D. Kafka, M. L. Watts, and J. J. Pieterse, IEEE J. Quantum Electron. 28, 2151 (1992).
[CrossRef]

Kangas, K. W.

Keller, U.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Kowalski, F. V.

F. V. Kowalski, S. J. Shattil, and P. D. Hale, Appl. Phys. Lett. 53, 734 (1988).
[CrossRef]

Lowenthal, D. D.

Matuschek, N.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Minelly, J. D.

Morier-Genoud, F.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Muller, C. H.

Nieh, S. T. K.

D. J. Taylor, S. E. Harris, and S. T. K. Nieh, Appl. Phys. Lett. 19, 269 (1971).
[CrossRef]

Pieterse, J. J.

J. D. Kafka, M. L. Watts, and J. J. Pieterse, IEEE J. Quantum Electron. 28, 2151 (1992).
[CrossRef]

Porta, J.

Sabert, H.

H. Sabert and E. Brinkmeyer, Electron. Lett. 29, 2122 (1993).
[CrossRef]

Scheuer, V.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Schulz, P. A.

P. A. Schulz, IEEE J. Quantum Electron. 24, 1039 (1988).
[CrossRef]

Shattil, S. J.

F. V. Kowalski, S. J. Shattil, and P. D. Hale, Appl. Phys. Lett. 53, 734 (1988).
[CrossRef]

Siegman, A. E.

A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).

Sutter, D. H.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Tashiro, H.

K. Akagawa, S. Wada, and H. Tashiro, Appl. Phys. Lett. 70, 1213 (1997).
[CrossRef]

S. Wada, K. Akagawa, and H. Tashiro, Opt. Lett. 21, 731 (1996).
[CrossRef] [PubMed]

S. Wada, K. Akagawa, and H. Tashiro, in Digest of Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim’97) (Optical Society of America, Washington, D.C., 1997), p. 115.

Taylor, D. J.

D. J. Taylor, S. E. Harris, and S. T. K. Nieh, Appl. Phys. Lett. 19, 269 (1971).
[CrossRef]

Tilsch, M.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Traynor, N. J.

Tschudi, T.

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

Wada, S.

K. Akagawa, S. Wada, and H. Tashiro, Appl. Phys. Lett. 70, 1213 (1997).
[CrossRef]

S. Wada, K. Akagawa, and H. Tashiro, Opt. Lett. 21, 731 (1996).
[CrossRef] [PubMed]

S. Wada, K. Akagawa, and H. Tashiro, in Digest of Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim’97) (Optical Society of America, Washington, D.C., 1997), p. 115.

Watts, M. L.

J. D. Kafka, M. L. Watts, and J. J. Pieterse, IEEE J. Quantum Electron. 28, 2151 (1992).
[CrossRef]

Appl. Phys. Lett. (3)

D. J. Taylor, S. E. Harris, and S. T. K. Nieh, Appl. Phys. Lett. 19, 269 (1971).
[CrossRef]

K. Akagawa, S. Wada, and H. Tashiro, Appl. Phys. Lett. 70, 1213 (1997).
[CrossRef]

F. V. Kowalski, S. J. Shattil, and P. D. Hale, Appl. Phys. Lett. 53, 734 (1988).
[CrossRef]

Electron. Lett. (1)

H. Sabert and E. Brinkmeyer, Electron. Lett. 29, 2122 (1993).
[CrossRef]

IEEE J. Quantum Electron. (2)

J. D. Kafka, M. L. Watts, and J. J. Pieterse, IEEE J. Quantum Electron. 28, 2151 (1992).
[CrossRef]

P. A. Schulz, IEEE J. Quantum Electron. 24, 1039 (1988).
[CrossRef]

Opt. Lett. (3)

Other (3)

S. Wada, K. Akagawa, and H. Tashiro, in Digest of Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim’97) (Optical Society of America, Washington, D.C., 1997), p. 115.

A. E. Siegman, Lasers (University Science, Mill Valley, Calif., 1986).

D. H. Sutter, I. D. Jung, N. Matuschek, F. Morier-Genoud, F. X. Kaertner, V. Scheuer, M. Tilsch, T. Tschudi, and U. Keller, in Ultrafast Phenomena XI, Proceedings of the 11th International Conference, Vol. 63 of Springer Series in Chemical Physics (Springer, New York, 1998), pp. 11–13.
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

Schematic of the cavity configuration with variable cavity length. LD, laser diode; PC, personal computer; M1, M2, mirrors.

Fig. 2
Fig. 2

Typical temporal profile of the mode-locked-like laser pulse train with different buildup times. The second pulse is the Ti:sapphire laser at 840  nm, and the first one is the pump pulse. The rf power PRF is used to control the laser net gain as well as the average output power of the laser, PLASER: (a) PRF=38%, PLASER=8.3 mW; (b) PRF=40%, PLASER=9.4 mW; (c) PRF=42%, PLASER=10 mW; (d) PRF=44%, PLASER=9.6 mW; (e) PRF=46%, PLASER=8.2 mW; (f) PRF=48%, PLASER=4.8 mW. The rf power PRF of 100% corresponds to 1  W. The inset shows a detailed laser pulse train.

Fig. 3
Fig. 3

Streak-camera measurement of the pulse train from the laser at 840  nm with (upper trace) and without (lower trace) a glass plate (thickness 5  mm) as an intra-cavity etalon.

Fig. 4
Fig. 4

Pulse width versus detuning of cavity length at a fixed frequency of 132.8  MHz, corresponding to a laser wavelength of 840  nm.

Fig. 5
Fig. 5

Tuning curve of the mode-locked-like Ti:sapphire laser with and without the uncoated etalon at a pump level of 300  mW. The laser linewidth is as narrow as 8.8  pm after the etalon is inserted into the cavity. Without the etalon, the linewidth is 0.1  nm.

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