Abstract

We demonstrate a Ti:sapphire-pumped intracavity-doubled optical parametric oscillator (OPO) that generates a total of up to 240 mW of sub-100-fs pulses tunable in the visible. The OPO consists of a 1.5-mm-thick KTiPO4 (KTP) crystal configured in a ring cavity that is synchronously pumped by a self-mode-locked Ti:sapphire laser operating at an 81-MHz repetition rate and 2.1-W average power, producing 115-fs pulses at λ = 790 nm. Intracavity doubling of the OPO is accomplished by inserting a 47-μm-thick β-BaB2O4 crystal into an additional focus in the OPO cavity. We demonstrate continuous tuning of the second-harmonic output from 580 to 657 nm. The potential tuning range of this intracavity-doubled KTP OPO is approximately 500 to 800 nm.

© 1993 Optical Society of America

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  1. D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
    [Crossref] [PubMed]
  2. W. S. Pelouch, P. E. Powers, C. L. Tang, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CPD14, p. 27.
  3. G. Mak, Q. Fu, H. M. van Driel, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWD1, p. 236.
  4. Q. Fu, G. Mak, H. M. van Driel, Opt. Lett. 17, 1006 (1992); G. Mak, Q. Fu, H. M. van Driel, in Digest of Ultrafast Phenomena VIII (Ecole Nationale Superieure Technique et Avancée, Paris, 1992), p. 394.
    [Crossref] [PubMed]
  5. W. S. Pelouch, P. E. Powers, C. L. Tang, Opt. Lett. 17, 1070 (1992); presented at International Quantum Electronics Conference, Vienna, 1992.
    [Crossref] [PubMed]
  6. G. Mak, Q. Fu, H. M. van Driel, Appl. Phys. Lett. 60, 542 (1992).
    [Crossref]
  7. C.-P. Huang, Ch. Spielmann, T. Brabec, E. Wintner, A. J. Schmidt, Opt. Lett. 17, 204 (1992).
    [Crossref]
  8. B. Proctor, F. Wise, Opt. Lett. 17, 1295 (1992).
    [Crossref] [PubMed]

1992 (5)

1989 (1)

D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
[Crossref] [PubMed]

Brabec, T.

Edelstein, D. C.

D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
[Crossref] [PubMed]

Fu, Q.

G. Mak, Q. Fu, H. M. van Driel, Appl. Phys. Lett. 60, 542 (1992).
[Crossref]

Q. Fu, G. Mak, H. M. van Driel, Opt. Lett. 17, 1006 (1992); G. Mak, Q. Fu, H. M. van Driel, in Digest of Ultrafast Phenomena VIII (Ecole Nationale Superieure Technique et Avancée, Paris, 1992), p. 394.
[Crossref] [PubMed]

G. Mak, Q. Fu, H. M. van Driel, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWD1, p. 236.

Huang, C.-P.

Mak, G.

G. Mak, Q. Fu, H. M. van Driel, Appl. Phys. Lett. 60, 542 (1992).
[Crossref]

Q. Fu, G. Mak, H. M. van Driel, Opt. Lett. 17, 1006 (1992); G. Mak, Q. Fu, H. M. van Driel, in Digest of Ultrafast Phenomena VIII (Ecole Nationale Superieure Technique et Avancée, Paris, 1992), p. 394.
[Crossref] [PubMed]

G. Mak, Q. Fu, H. M. van Driel, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWD1, p. 236.

Pelouch, W. S.

W. S. Pelouch, P. E. Powers, C. L. Tang, Opt. Lett. 17, 1070 (1992); presented at International Quantum Electronics Conference, Vienna, 1992.
[Crossref] [PubMed]

W. S. Pelouch, P. E. Powers, C. L. Tang, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CPD14, p. 27.

Powers, P. E.

W. S. Pelouch, P. E. Powers, C. L. Tang, Opt. Lett. 17, 1070 (1992); presented at International Quantum Electronics Conference, Vienna, 1992.
[Crossref] [PubMed]

W. S. Pelouch, P. E. Powers, C. L. Tang, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CPD14, p. 27.

Proctor, B.

Schmidt, A. J.

Spielmann, Ch.

Tang, C. L.

W. S. Pelouch, P. E. Powers, C. L. Tang, Opt. Lett. 17, 1070 (1992); presented at International Quantum Electronics Conference, Vienna, 1992.
[Crossref] [PubMed]

D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
[Crossref] [PubMed]

W. S. Pelouch, P. E. Powers, C. L. Tang, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CPD14, p. 27.

van Driel, H. M.

G. Mak, Q. Fu, H. M. van Driel, Appl. Phys. Lett. 60, 542 (1992).
[Crossref]

Q. Fu, G. Mak, H. M. van Driel, Opt. Lett. 17, 1006 (1992); G. Mak, Q. Fu, H. M. van Driel, in Digest of Ultrafast Phenomena VIII (Ecole Nationale Superieure Technique et Avancée, Paris, 1992), p. 394.
[Crossref] [PubMed]

G. Mak, Q. Fu, H. M. van Driel, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWD1, p. 236.

Wachman, E. S.

D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
[Crossref] [PubMed]

Wintner, E.

Wise, F.

Appl. Phys. Lett. (2)

G. Mak, Q. Fu, H. M. van Driel, Appl. Phys. Lett. 60, 542 (1992).
[Crossref]

D. C. Edelstein, E. S. Wachman, C. L. Tang, Appl. Phys. Lett. 54, 1728 (1989); E. S. Wachman, D. C. Edelstein, C. L. Tang, Opt. Lett. 15, 136 (1990); E. S. Wachman, W. S. Pelouch, C. L. Tang, J. Appl. Phys. 70, 1893 (1991).
[Crossref] [PubMed]

Opt. Lett. (4)

Other (2)

W. S. Pelouch, P. E. Powers, C. L. Tang, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CPD14, p. 27.

G. Mak, Q. Fu, H. M. van Driel, in Digest of Conference on Lasers and Electro-Optics (Optical Society of America, Washington, D.C., 1992), paper CWD1, p. 236.

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Figures (3)

Fig. 1
Fig. 1

Schematic of the Ti:sapphire-pumped intracavity-doubled KTP OPO. The Ti:sapphire pump is focused by the r = 25 cm pump mirror (PM) onto the 1.5-mm KTP crystal, which is cut for Type II phase matching in the positive region of the xz plane. The curved OPO high reflectors (MC1, MC2) surrounding the gain (KTP) and frequency-doubling (BBO) crystals have radii r = 15 cm and r = 10 cm, respectively. The four-prism sequence (P) consists of two pair of 60° SF-14 prisms spaced 20 cm tip to tip. The single SHG output is transmitted through the OPO high reflector (MC2) at the doubling focus.

Fig. 2
Fig. 2

Fast-photodiode oscilloscope trace showing the SH output of the intracavity-doubled OPO on time scales of (a) 20 ns/division and (b) 2 ms/division. The real-time autocorrelation in (c) shows a pulse width of 115 fs (FWHM, sech2 fit) at λ = 647 nm, corresponding to 240 mW of total power generated in the second harmonic.

Fig. 3
Fig. 3

Spectra showing the demonstrated tuning range of the intracavity frequency-doubled OPO from 580 to 657 nm. Variation in the bandwidth may be explained by a slight length detuning of the cavity from optimal length matching. This effect, as well as adjustment of intraprism path length, has been observed to affect the autocorrelation pulse width.

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