Abstract

Micro-optic technology is used in a terawatt multipass Ti:sapphire amplifier to convert high-multimode, 532-nm radiation from an unstable resonator Nd:YAG laser into a TEM00 amplified output without sacrificing the amplifier-to-pump energy conversion efficiency. Experimental measurements and Fourier analysis of the spatial mode show a 3.8-fold increase in the peak irradiance and an order-of-magnitude improvement in the spatial contrast.

© 2003 Optical Society of America

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[CrossRef]

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[CrossRef]

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C. Y. Cote, J. C. Kieffer, and O. Peyrusse, Phys. Rev. E 56,992 (1997).
[CrossRef]

Backus, S.

E. Zeek, R. Bartels, M. M. Murnane, H. C. Kapteyn, S. Backus, and G. Vdovin, Opt. Lett. 25,587 (2000).
[CrossRef]

S. Backus, C. G. Durfee, M. M. Murnane, and H. C. Kapteyn, Rev. Sci. Instrum. 69,1207 (1998).
[CrossRef]

Bartels, R.

Barty, C.

Chanteloup, J. C.

Cheng, Z.

Cheriaux, G.

Cote, C. Y.

C. Y. Cote, J. C. Kieffer, and O. Peyrusse, Phys. Rev. E 56,992 (1997).
[CrossRef]

Druon, F.

Durfee, C. G.

S. Backus, C. G. Durfee, M. M. Murnane, and H. C. Kapteyn, Rev. Sci. Instrum. 69,1207 (1998).
[CrossRef]

Erdmann, L.

Faure, J.

Fittinghoff, D.

Gaeta, A. L.

Guo, T.

Homoelle, D.

Jang, J. S.

Javidi, B.

Kapteyn, H. C.

E. Zeek, R. Bartels, M. M. Murnane, H. C. Kapteyn, S. Backus, and G. Vdovin, Opt. Lett. 25,587 (2000).
[CrossRef]

S. Backus, C. G. Durfee, M. M. Murnane, and H. C. Kapteyn, Rev. Sci. Instrum. 69,1207 (1998).
[CrossRef]

Kiamilev, F.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Kieffer, J. C.

C. Y. Cote, J. C. Kieffer, and O. Peyrusse, Phys. Rev. E 56,992 (1997).
[CrossRef]

Kim, D.

Kowarschik, R.

Laude, V.

Lecompte, M.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Leleko, V.

V. Leleko, Advanced Micooptic Systems GmbH, Lebacher Strasse 6a, 66113 Saarbrücken, Germany (personal communication, 2003).

Mait, J. N.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Maksimchuk, A.

Mourou, G.

Murnane, M. M.

E. Zeek, R. Bartels, M. M. Murnane, H. C. Kapteyn, S. Backus, and G. Vdovin, Opt. Lett. 25,587 (2000).
[CrossRef]

S. Backus, C. G. Durfee, M. M. Murnane, and H. C. Kapteyn, Rev. Sci. Instrum. 69,1207 (1998).
[CrossRef]

Nantel, N.

Nees, J.

Peyrusse, O.

C. Y. Cote, J. C. Kieffer, and O. Peyrusse, Phys. Rev. E 56,992 (1997).
[CrossRef]

Prather, D. W.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Rose-Petruck, C.

Simonis, G. J.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Spielmann, C.

Squier, J.

Toth, C.

Tournois, P.

Vdovin, G.

Venkataraman, S.

D. W. Prather, S. Venkataraman, M. Lecompte, F. Kiamilev, J. N. Mait, and G. J. Simonis, IEEE Photon Technol. Lett. 13,1112 (2001).
[CrossRef]

Verluise, F.

Walker, B.

Walker, B. C.

Wilson, K.

Yamakawa, K.

Yang, J. Z.

Yanovsky, V.

Zeek, E.

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Figures (3)

Fig. 1
Fig. 1

(a) Optical micrograph of a lenslet array with enhanced contrast to show the surface features. (b) Contour of a lenslet array with a gray-scale range of 3 µm. [The 400 µm×300 µm segments in (a) and (b) are not identical sections of the array.] The Nd:YAG laser radiation (c) before and (d) after lenslet array filtering with an eight-level gray scale.

Fig. 2
Fig. 2

Scale drawing of the amplifier: D, lenslet array; L1, L2, 100- and 200-mm focal-length lenses, respectively; R, Ti:sapphire rod; EKSPLA 303, doubled Nd:YAG pump laser.

Fig. 3
Fig. 3

Normalized gray-scale images of single-shot, amplified beams (a) before and (b) after the lenslet array was used. (c) Near-field line-out profile before (filled triangles) and after (filled circles) the lenslet array was used and with a Gaussian fit (curve). (d) Profile from the two-dimensional Fourier transform of the near field before (open triangles) and after (circles) the lenslet array was used and a Gaussian fit (curve). (e) Radial intensity profile at the focus for the unamplified beam (crosses), the amplified beam before (filled triangles) and after (filled circles) the lenslet array was used and Gaussian fit (curve). All units have been normalized to the Gaussian profile.

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