Abstract

We present a method to generate high-energy flat-top UV laser pulses such as the ones needed to optimally drive high-brightness radio-frequency photoinjectors. In this scheme we believe to be novel, the longitudinal profile of a laser pulse from a Ti:sapphire master oscillator power amplifier system is controlled using a mechanical mask in the Fourier plane of a 4f stretcher located after the harmonic conversion crystals. Such a scheme allows us to overcome many of the difficulties faced by current state-of-the-art pulse-shaping designs. These are in fact based on various versions of preamplifier infrared shapers and hence suffer from the limitations set by the nonlinearities of chirped-pulse amplification and harmonic conversion. Beyond the clear advantages of simplicity and robustness, the proposed solution offers the possibility to deliver a pulse with very short rise and fall times and to freely change the output pulse length. We also note that, after proper calibration between spectral and temporal profiles, the shaper optical setup offers the possibility to retrieve the longitudinal profile of the laser pulse on a shot-to-shot basis.

© 2007 Optical Society of America

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References

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  1. J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
    [CrossRef]
  2. L. Palumbo and J. Rosenzweig, eds., Technical Design Report for the SPARC Advanced Photo-Injector (Laboratori Nazionali Frascati, Istituto Nazionale di Fisica Nucleare, 2004).
  3. P. R. Bolton and J. E. Clendenin, "Photoinjector design for the LCLS," Nucl. Instrum. Methods Phys. Res. A 483, 296-300 (2002).
    [CrossRef]
  4. A. M. Wiener, "Femtosecond pulse shaping using spatial light modulators," Rev. Sci. Instrum. 71, 1929-1960 (2000).
  5. F. Verluise, V. Laude, J. P. Huignard, P. Tournois, and A. Migus, "Arbitrary dispersion control of ultrashort optical pulses with acoustic waves," J. Opt. Soc. Am. B 17, 138-145 (2000).
    [CrossRef]
  6. S. Cialdi, M. Petrarca, and C. Vicario, "High-power third-harmonic flat pulse laser generation," Opt. Lett. 31, 2885-2887 (2006).
    [CrossRef] [PubMed]
  7. M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.
  8. M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

2006 (2)

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

S. Cialdi, M. Petrarca, and C. Vicario, "High-power third-harmonic flat pulse laser generation," Opt. Lett. 31, 2885-2887 (2006).
[CrossRef] [PubMed]

2005 (1)

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

2004 (1)

L. Palumbo and J. Rosenzweig, eds., Technical Design Report for the SPARC Advanced Photo-Injector (Laboratori Nazionali Frascati, Istituto Nazionale di Fisica Nucleare, 2004).

2002 (2)

P. R. Bolton and J. E. Clendenin, "Photoinjector design for the LCLS," Nucl. Instrum. Methods Phys. Res. A 483, 296-300 (2002).
[CrossRef]

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

2000 (2)

Bolton, P. R.

P. R. Bolton and J. E. Clendenin, "Photoinjector design for the LCLS," Nucl. Instrum. Methods Phys. Res. A 483, 296-300 (2002).
[CrossRef]

Boscolo, M.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Castelli, F.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Cialdi, S.

S. Cialdi, M. Petrarca, and C. Vicario, "High-power third-harmonic flat pulse laser generation," Opt. Lett. 31, 2885-2887 (2006).
[CrossRef] [PubMed]

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Clendenin, J. E.

P. R. Bolton and J. E. Clendenin, "Photoinjector design for the LCLS," Nucl. Instrum. Methods Phys. Res. A 483, 296-300 (2002).
[CrossRef]

Endo, A.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Ferrario, M.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Flacco, A.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Gatti, G.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

Ghigo, A.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

Huignard, J. P.

Laude, V.

Mattioli, M.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

Migliorati, M.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

Migus, A.

Mususmeci, P.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

Okada, Y.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Palumbo, L.

L. Palumbo and J. Rosenzweig, eds., Technical Design Report for the SPARC Advanced Photo-Injector (Laboratori Nazionali Frascati, Istituto Nazionale di Fisica Nucleare, 2004).

Petrarca, M.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

S. Cialdi, M. Petrarca, and C. Vicario, "High-power third-harmonic flat pulse laser generation," Opt. Lett. 31, 2885-2887 (2006).
[CrossRef] [PubMed]

Rosenzweig, J.

L. Palumbo and J. Rosenzweig, eds., Technical Design Report for the SPARC Advanced Photo-Injector (Laboratori Nazionali Frascati, Istituto Nazionale di Fisica Nucleare, 2004).

Sakai, F.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Takasago, K.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Tournois, P.

Verluise, F.

Vicario, C.

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

S. Cialdi, M. Petrarca, and C. Vicario, "High-power third-harmonic flat pulse laser generation," Opt. Lett. 31, 2885-2887 (2006).
[CrossRef] [PubMed]

Washio, M.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Wiener, A. M.

A. M. Wiener, "Femtosecond pulse shaping using spatial light modulators," Rev. Sci. Instrum. 71, 1929-1960 (2000).

Yada, A.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Yanagida, T.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Yang, J.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

Yorozu, M.

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

J. Appl. Phys. (1)

J. Yang, F. Sakai, T. Yanagida, M. Yorozu, Y. Okada, K. Takasago, A. Endo, A. Yada, and M. Washio, "Low-emittance electron-beam generation with laser pulse shaping in photocathode radio-frequency gun," J. Appl. Phys. 92, 1608-1612 (2002).
[CrossRef]

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

Nucl. Instrum. Methods Phys. Res. A (1)

P. R. Bolton and J. E. Clendenin, "Photoinjector design for the LCLS," Nucl. Instrum. Methods Phys. Res. A 483, 296-300 (2002).
[CrossRef]

Opt. Lett. (1)

Rev. Sci. Instrum. (1)

A. M. Wiener, "Femtosecond pulse shaping using spatial light modulators," Rev. Sci. Instrum. 71, 1929-1960 (2000).

Other (3)

M. Petrarca, C. Vicario, S. Cialdi, P. Mususmeci, G. Gatti, A. Ghigo, and M. Mattioli, "UV-IR cross correlator," Rep. INFN-SPARC/LS-06/002 (INFN-LNF, 2006), pp. 1-19.

M. Boscolo, M. Ferrario, M. Migliorati, F. Castelli, S. Cialdi, and A. Flacco, "Preliminary results on beam dynamics of laser pulse shaping effects in SPARC," in Proceedings of the 2005 Particle Accelerator Conference (IEEE, 2005), p. 1315-1317.

L. Palumbo and J. Rosenzweig, eds., Technical Design Report for the SPARC Advanced Photo-Injector (Laboratori Nazionali Frascati, Istituto Nazionale di Fisica Nucleare, 2004).

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Figures (4)

Fig. 1
Fig. 1

Scheme of the third-harmonic pulse shaper implemented on the SPARC photocathode driver laser system.

Fig. 2
Fig. 2

Simulations of the effect of a cut of the spectral tails.

Fig. 3
Fig. 3

Initial spectrum (a1), spectrum after the mask (b1), and relative measured cross correlations (a2 and b2). The dotted curves represent the theoretical cross correlations obtained, taking into account that the probe pulse used for the measurement is actually 750 fs long.

Fig. 4
Fig. 4

Rise time as a function of spectral bandwidth Δ λ after the cut.

Equations (2)

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β = ( λ 0 3 h π c 2 d 2 ) 1 1 [ λ 0 d sin ( θ i ) ] 2 ,
I ( t ) = | I ˜ ( ω ) exp [ i ( β ω 2 2 ω t ) ] d ω | 2 ,

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