Abstract

We present a method of adjusting the pulse duration and eliminating the pulse-front tilt of an ultrashort pulse in real time by use of a specially configured single-shot autocorrelator. Pulse-front tilt, or a temporal delay across the pulse front, is a common ultrashort-pulse phenomenon when dispersive elements are being used. We show the design of an autocorrelator that can be used to eliminate the pulse-front tilt and simultaneously adjust the pulse duration in real time by adjustment of the pulse compressor of a chirped-pulse amplified laser system.

© 2001 Optical Society of America

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References

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  1. D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
    [CrossRef]
  2. G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
    [CrossRef]
  3. For example, Light Conversion (Vilnius, Lithuania) markets a tilted front pulse autocorrelator.
  4. J.-C. Diels and W. Rudolph, Ultrashort Laser Pulse Phenomena (Academic, San Diego, Calif., 1996).
  5. J. Janszky and G. Corradi, Opt. Commun. 23, 293 (1977).
    [CrossRef]
  6. F. Salin, P. Georges, G. Roger, and A. Brun, Appl. Opt. 26, 4528 (1987).
    [CrossRef] [PubMed]
  7. A. A. Maznev, T. F. Crimmins, and K. A. Nelson, Opt. Lett. 23, 1378 (1998).
    [CrossRef]
  8. Z. S. Sacks, “Transscleral femtosecond photodisruption for the treatment of glaucoma,” Ph.D. dissertation (University of Michigan, Ann Arbor, Mich., 2000), pp. 132–146.

2000

G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
[CrossRef]

1998

1987

1985

D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

1977

J. Janszky and G. Corradi, Opt. Commun. 23, 293 (1977).
[CrossRef]

Brun, A.

Corradi, G.

J. Janszky and G. Corradi, Opt. Commun. 23, 293 (1977).
[CrossRef]

Crimmins, T. F.

Diels, J.-C.

J.-C. Diels and W. Rudolph, Ultrashort Laser Pulse Phenomena (Academic, San Diego, Calif., 1996).

Georges, P.

Janszky, J.

J. Janszky and G. Corradi, Opt. Commun. 23, 293 (1977).
[CrossRef]

Kasper, A.

G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
[CrossRef]

Maznev, A. A.

Mourou, G.

D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

Nelson, K. A.

Pretzler, G.

G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
[CrossRef]

Roger, G.

Rudolph, W.

J.-C. Diels and W. Rudolph, Ultrashort Laser Pulse Phenomena (Academic, San Diego, Calif., 1996).

Sacks, Z. S.

Z. S. Sacks, “Transscleral femtosecond photodisruption for the treatment of glaucoma,” Ph.D. dissertation (University of Michigan, Ann Arbor, Mich., 2000), pp. 132–146.

Salin, F.

Strickland, D.

D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

Witte, K. J.

G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
[CrossRef]

Appl. Opt.

Appl. Phys. B

G. Pretzler, A. Kasper, and K. J. Witte, Appl. Phys. B 70, 1 (2000).
[CrossRef]

Opt. Commun.

D. Strickland and G. Mourou, Opt. Commun. 56, 219 (1985).
[CrossRef]

J. Janszky and G. Corradi, Opt. Commun. 23, 293 (1977).
[CrossRef]

Opt. Lett.

Other

Z. S. Sacks, “Transscleral femtosecond photodisruption for the treatment of glaucoma,” Ph.D. dissertation (University of Michigan, Ann Arbor, Mich., 2000), pp. 132–146.

For example, Light Conversion (Vilnius, Lithuania) markets a tilted front pulse autocorrelator.

J.-C. Diels and W. Rudolph, Ultrashort Laser Pulse Phenomena (Academic, San Diego, Calif., 1996).

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Figures (5)

Fig. 1
Fig. 1

(a) Plane propagating along z formed by lines a and b with spatial tilt α (in the xz plane) and β (in the yz plane). (b) Intersection of planes 1 and 2.

Fig. 2
Fig. 2

Single-shot autocorrelator geometries. The pulse intersection is coplanar in Cases 1 and 3 and is in the plane perpendicular to the paper in Cases 3 and 4. R, vertical rooftop mirror; χ2, second-order nonlinear crystal. The axes on the arrows represent top–bottom and left–right parts of the incoming pulse to show how the pulses are flipped with respect to each other on intersection.

Fig. 3
Fig. 3

Compressor with two reflective gratings (G1 and G2). Vertical and horizontal tilt are adjusted by movement along V and H, respectively. R, 90° vertical rooftop mirror.

Fig. 4
Fig. 4

Autocorrelation trace, λ/2, seen with the two pulse replicas, λ. (a) No pulse-front tilt. (b) Pulse-front tilt.

Fig. 5
Fig. 5

Pulse-front tilt and spatial chirp as seen by the TPF-SSAC (Case 4) and an imaging spectrometer. (a) No pulse-front tilt. (b) Pulse-front tilt and corresponding slight spatial chirp. Wavelength spectrum FWHM, 8 nm.

Tables (1)

Tables Icon

Table 1 Characteristics of Traces for the Autocorrelators Shown in Fig.  2

Equations (4)

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G2τ-+ItIt+τdt,
z=ct+αx+βy,
xsinϕ-α1cosϕ-β1y+zα1sinϕ+cosϕ=ct,
x-sinϕ-α2cosϕ-β2y+zα2sinϕ+cosϕ=ct.

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