We demonstrate low-pump-power operation of a self-mode-locked Ti:sapphire laser. Stable, sub-20-fs duration pulses, with output powers of 35–100 mW, were obtained for pump powers in the range of 400 mW–1 W. Our design uses a tight focusing geometry for both the argon-ion and Ti:sapphire beams within the Ti:sapphire crystal, which significantly reduces the pump-power requirements.

© 1996 Optical Society of America

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Asaki, M.T.

Brabec, T.

Christov, I.

Christov, I. P.

Curley, P.

Garvey, D.

Hong, J.

Huang, C. P.

Kapteyn, H.

Kapteyn, H. C.

Kean, P. N.

Krausz, F.

Lamb, K.

Murnane, M.

Murnane, M. M.

Murnane, M.M.

Schmidt, A.

Sibbett, W.

Spence, D. E.

Spielmann, C.

Stoev, V.

Taft, G.

Wintner, E.

Yelland, C.

Zhou, J.

Zhou, J. P.

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the laser.

Fig. 2
Fig. 2

(a) Output spectrum at 0.5-W pump power. The FWHM is 66 nm. (b) Autocorrelation trace of a 15-fs pulse (crosses); Fourier transform of the spectrum shown in (a) with a FWHM of 14.5 fs (dashed curve); fit to the data, with a FWHM of 16 fs (solid curve).

Fig. 3
Fig. 3

Stability regions as a function of input and output powers for output couplings of 3%, 6%, and 12%.