Abstract

It is experimentally shown that pulse-to-pulse instabilities in the output of Kerr lens mode-locked Ti:sapphire lasers are usual and that they can affect some of the pulse variables (e.g., the spot size) and not others (e.g., pulse duration and energy). These instabilities are not detectable in the averaged signals (such as the autocorrelation of the pulse) that are customarily used for controlling the laser. But, if they are present but are disregarded, these instabilities have undesirable consequences in almost any application. A simple way to detect and eliminate the instabilities is described.

© 1999 Optical Society of America

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References

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1998 (2)

M. Marioni and A. Hnilo, Opt. Commun. 147, 89 (1998).
[CrossRef]

D. Côté and H. M. van Driel, Opt. Lett. 23, 715 (1998).
[CrossRef]

1996 (1)

1995 (4)

1993 (1)

1991 (1)

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

1981 (1)

E. Ott, Rev. Mod. Phys. 53, 655 (1981).
[CrossRef]

Antonetti, A.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Bolton, S.

Chemla, D.

Christov, I.

Côté, D.

Cundiff, S.

Grillon, G.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Haus, H.

Hnilo, A.

M. Marioni and A. Hnilo, Opt. Commun. 147, 89 (1998).
[CrossRef]

A. Hnilo, J. Opt. Soc. Am. B 12, 718 (1995).
[CrossRef]

Ippen, E.

Joffre, M.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Kapteyn, H.

Knox, W.

Le Blanc, C.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Likforman, J. P.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Marioni, M.

M. Marioni and A. Hnilo, Opt. Commun. 147, 89 (1998).
[CrossRef]

Migus, A.

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

Murnane, M.

Ott, E.

E. Ott, Rev. Mod. Phys. 53, 655 (1981).
[CrossRef]

Stoev, V.

Sucha, G.

Tsang, T.

van Driel, H. M.

Weiss, S.

Xing, Q.

Q. Xing, W. Zhang, and K. Yoo, Opt. Commun. 119, 113 (1995).
[CrossRef]

Yoo, K.

Q. Xing, W. Zhang, and K. Yoo, Opt. Commun. 119, 113 (1995).
[CrossRef]

Zhang, W.

Q. Xing, W. Zhang, and K. Yoo, Opt. Commun. 119, 113 (1995).
[CrossRef]

Appl. Phys. Lett. (1)

J. P. Likforman, G. Grillon, M. Joffre, C. Le Blanc, A. Migus, and A. Antonetti, Appl. Phys. Lett. 58, 206 (1991).
[CrossRef]

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

Opt. Commun. (2)

Q. Xing, W. Zhang, and K. Yoo, Opt. Commun. 119, 113 (1995).
[CrossRef]

M. Marioni and A. Hnilo, Opt. Commun. 147, 89 (1998).
[CrossRef]

Opt. Lett. (5)

Rev. Mod. Phys. (1)

E. Ott, Rev. Mod. Phys. 53, 655 (1981).
[CrossRef]

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Figures (2)

Fig. 1
Fig. 1

Schematic of the laser and the measuring setup: M1, 10% output coupler; M2 M3, focusing mirrors f=50 mm; M4, rear mirror; R, Ti:sapphire rod L=4 mm; P1,P2, prisms for GVD adjustment. The distances are (in millimeters) M1M2, variable from 550 to 873; M3M4, 1060; M2R, 51.5; M3R, 51.5; P1P2, 800. B1, B2, beam splitters; G, diffraction grating 1200 mm-1. DU, DS, and DT are defined in text. The intensity profiles of the pulse shape and spectrum are sketched.

Fig. 2
Fig. 2

Single-sweep signals by the photodiodes. a, DS shows period doubling in spot size; x=865 mm. b, DT simultaneous with a shows stable mode locking. c, DS shows a seemingly tangent bifurcation; x=720 mm. d, DS shows a period-three oscillation; x=720 mm. Scales a, b, and d; 10 ns/division (reduced scan mode); scale c, 50 ns/division.

Equations (3)

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1/f=8γ2π1/2UT1/2S2zR,
β=8γ2/π1/2UST3/2zR/λ,
zR/fβD=πSzRλ/TD.

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