Abstract

A new high-contrast, high-gain optical parametric chirped-pulse amplifier (OPCPA) architecture is demonstrated in periodically poled KTiOPO4 (PPKTP). This architecture overcomes parametric fluorescence contrast limitations of the OPCPA in periodically poled materials. The scheme is based on two passes of a single relay-imaged pump pulse and a free-propagating signal pulse through a 1.5mm×5mm×7.5mm PPKTP crystal. The output energy of 1.2mJ is generated at a center wavelength of 1053nm by 24mJ of pump energy. A prepulse contrast level of >3×107 was measured with >106 saturated gain in the amplifier. Amplified pulses were compressed to 200fs. This simple and versatile concept requires only a modest pump energy from a commercial pump laser and represents a possible high-contrast front end for high-energy Nd:glass-based petawatt-class lasers.

© 2005 Optical Society of America

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2003 (3)

2002 (3)

2000 (1)

1998 (1)

1997 (1)

I. N. Ross, P. Matousek, M. Towrie, A. J. Langley, and J. L. Collier, Opt. Commun. 144, 125 (1997).
[Crossref]

1992 (1)

A. Dubietis, G. Jonusauskas, and A. Piskarskas, Opt. Commun. 88, 437 (1992).
[Crossref]

Adel, P.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Allott, R. M.

Arbore, M. A.

Bagnoud, V.

Barty, C. P. J.

Begishev, I. A.

Bonner, R. A.

Collier, J. L.

Comaskey, B. J.

Danson, C. N.

Dubietis, A.

A. Dubietis, G. Jonusauskas, and A. Piskarskas, Opt. Commun. 88, 437 (1992).
[Crossref]

Ebbers, C. A.

Fallnich, C.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Fejer, M. M.

Fragemann, A.

Galvanauskas, A.

Guardalben, M. J.

Hariharan, A.

Harter, D.

Hellström, J.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Hernandez-Gomez, C.

Hundertmark, H.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Jonusauskas, G.

A. Dubietis, G. Jonusauskas, and A. Piskarskas, Opt. Commun. 88, 437 (1992).
[Crossref]

Jovanovic, I.

Karlsson, G.

Langley, A. J.

I. N. Ross, P. Matousek, M. Towrie, A. J. Langley, and J. L. Collier, Opt. Commun. 144, 125 (1997).
[Crossref]

Laurell, F.

A. Fragemann, V. Pasiskevicius, G. Karlsson, and F. Laurell, Opt. Express 11, 1297 (2003), http://www.opticexpress.org.
[Crossref] [PubMed]

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Matousek, P.

Morse, E. C.

Neely, D.

Noack, F.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Osvay, K.

Pasiskevicius, V.

A. Fragemann, V. Pasiskevicius, G. Karlsson, and F. Laurell, Opt. Express 11, 1297 (2003), http://www.opticexpress.org.
[Crossref] [PubMed]

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Pennington, D. M.

Pepler, D. A.

Petrov, V.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Piskarskas, A.

A. Dubietis, G. Jonusauskas, and A. Piskarskas, Opt. Commun. 88, 437 (1992).
[Crossref]

Puth, J.

Ross, I. N.

Rotermund, F.

F. Rotermund, V. Petrov, F. Noack, V. Pasiskevicius, J. Hellström, F. Laurell, H. Hundertmark, P. Adel, and C. Fallnich, Electron. Lett. 38, 561 (2002).
[Crossref]

Schmidt, J. R.

I. Jovanovic, J. R. Schmidt, and C. A. Ebbers, Appl. Phys. Lett. 83, 4125 (2003).
[Crossref]

Towrie, M.

I. N. Ross, P. Matousek, M. Towrie, A. J. Langley, and J. L. Collier, Opt. Commun. 144, 125 (1997).
[Crossref]

Waxer, L. J.

Zuegel, J. D.

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Figures (5)

Fig. 1
Fig. 1

Schematic of millijoule OPCPA in PPKTP: FI, Faraday isolator; PC, Pockels cell; TFPs, thin-film polarizers; RMs, roof mirrors; T1–T3, telescopes; WP, wave plate; D1, D2, dichroic beam splitters; BD, beam dump; K, knife edge.

Fig. 2
Fig. 2

Oscillator ( 6 - nm FWHM; thinner curve) and amplified signal ( 12 - nm FWHM; thicker curve) spectra. Spectral broadening arises from the temporal effect of different rates of frequency conversion across the chirped-signal spectrum. The pump pulse is depleted first at the center wavelength position owing to its higher initial intensity. A dip in the amplified pulse spectrum is the result of the onset of backconversion.

Fig. 3
Fig. 3

(a) Pump and (b) amplified-signal (second pass) near-field beam profiles.

Fig. 4
Fig. 4

Amplified-signal (a) free propagation and (b) far-field beam profiles.

Fig. 5
Fig. 5

Experimental autocorrelation trace of the recompressed pulse (thicker curve; 350 - fs FWHM; deconvolved pulse width, 206 - fs FWHM) and calculated transform-limited autocorrelation (thinner curve; 282 - fs FWHM; deconvolved pulse width, 147 - fs FWHM). The recompressed pulse duration is 1.4 times the Fourier transform limit as a result of spherical and chromatic aberrations in the pulse stretcher.

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