Abstract

We describe the programmable spatial beam shaping of 100-kHz, 4-μJ amplified femtosecond pulses in a focal plane by wave-front modulation. Phase distributions are determined by a numerical iterative procedure. A nonpixelated optically addressed liquid-crystal light valve is used as a programmable wave-front tailoring device. Top-hat, doughnut, square, and triangle shapes of 20-μm size are obtained in a focal plane. Their suitability for femtosecond laser machining is demonstrated.

© 2005 Optical Society of America

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2005 (1)

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

2003 (1)

2002 (3)

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

B. Wattellier, C. Sauteret, J.-C. Chanteloup, and A. Migus, Opt. Lett. 27, 213 (2002).
[CrossRef]

J. S. Liu and M. R. Taghizadeh, Opt. Lett. 27, 1463 (2002).
[CrossRef]

2001 (1)

1996 (2)

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

K. Nemoto, T. Fujii, N. Goto, T. Nayuki, and Y. Kanai, Opt. Lett. 21, 168 (1996).
[CrossRef] [PubMed]

1993 (2)

1982 (1)

1972 (1)

R. W. Gerchberg and W. O. Saxton, Optik (Stuttgart) 35, 237 (1972).

Aubourg, P.

Audouard, E.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Bourderionnet, J.

Brignon, A.

Chanteloup, J.-C.

Chattrapiban, N.

Chichkov, B. N.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Cofield, D.

Cordingley, J.

Cottrell, D. M.

Davis, J. A.

Delboulbe, A.

Dickey, F. M.

F. M. Dickey and S. C. Holswade, Laser Beam Shaping (Marcel Dekker, New York, 2000).
[CrossRef]

Fortunier, R.

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Fraczkievicz, A.

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Fujii, T.

Gerchberg, R. W.

R. W. Gerchberg and W. O. Saxton, Optik (Stuttgart) 35, 237 (1972).

Goto, N.

Guertin, J.

Hareng, M.

Hill, W. T.

Holswade, S. C.

F. M. Dickey and S. C. Holswade, Laser Beam Shaping (Marcel Dekker, New York, 2000).
[CrossRef]

Huignard, J. P.

Huignard, J.-P.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

J. Bourderionnet, A. Brignon, J.-P. Huignard, A. Delboulbe, and B. Loiseaux, Opt. Lett. 26, 1958 (2001).
[CrossRef]

Huot, N.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Jonin, C.

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Kanai, Y.

Laporte, P.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Larat, C.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

Le Harzic, R.

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Liu, J. S.

Loiseaux, B.

Migus, A.

Momma, C.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Mullen, R. A.

Nayuki, T.

Nemoto, K.

Nolte, S.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Rogers, E. A.

Roy, R.

Sanner, N.

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

Sauteret, C.

Saxton, W. O.

R. W. Gerchberg and W. O. Saxton, Optik (Stuttgart) 35, 237 (1972).

Taghizadeh, M. R.

Tunnermann, A.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Valette, S.

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Von Alvensleben, F.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Wattellier, B.

Wellegehausen, B.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Welling, H.

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Appl. Opt. (3)

Appl. Phys. B (1)

N. Sanner, N. Huot, E. Audouard, C. Larat, P. Laporte, and J.-P. Huignard, Appl. Phys. B 80, 27 (2005).
[CrossRef]

Appl. Phys. Lett. (1)

R. Le Harzic, N. Huot, E. Audouard, C. Jonin, P. Laporte, S. Valette, A. Fraczkievicz, and R. Fortunier, Appl. Phys. Lett. 80, 3886 (2002).
[CrossRef]

Opt. Commun. (1)

C. Momma, B. N. Chichkov, S. Nolte, F. Von Alvensleben, A. Tunnermann, H. Welling, and B. Wellegehausen, Opt. Commun. 129, 134 (1996).
[CrossRef]

Opt. Lett. (5)

Optik (Stuttgart) (1)

R. W. Gerchberg and W. O. Saxton, Optik (Stuttgart) 35, 237 (1972).

Other (1)

F. M. Dickey and S. C. Holswade, Laser Beam Shaping (Marcel Dekker, New York, 2000).
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

(a) Cross section of the two-dimensional calculated phase distribution that changes a Gaussian beam into a square top-hat focal spot (solid curve). Three phase jumps are noticeable. Dashed curve, parabolic numerical fit corresponding to the focus component. (b) rms error between an ideal top-hat distribution and the calculated focal-spot result as a function of the OALV’s spatial resolution. Inset, experimental focal spot. (c) Phase profile after focus subtraction. No more phase jumps remain. (d) Corresponding rms error. Inset, experimental focal spot.

Fig. 2
Fig. 2

Experimental setup with a 4 - μ J , 100 - kHz , 130 - fs , 800 - nm amplified femtosecond laser: λ 2 , half-wave plate; NDs, neutral-density filters; BF, blue filter; IRF, infrared filter ( 800 nm ) ; SH, Shack–Hartmann sensor; OBJ, microscope objective ( 8 × ; N.A., 0.25). Beam shaping is performed in the focal plane.

Fig. 3
Fig. 3

Results of experimental focal-spot shaping: (a) Gaussian focal spot with wave-front correction only, (b) circular top hat, (c) doughnut, (d) square top hat, (e) triangular top hat.

Fig. 4
Fig. 4

Experimental (solid curves) and theoretical (dashed curves) profiles for (a) a Gaussian focal spot with wave-front correction only, (b) a circular top hat, (c) a doughnut, (d) a square top hat, and (e) a triangular top hat.

Fig. 5
Fig. 5

Microdrilled stainless steel with a square-shaped focal spot (scanning-electron microscope image).

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