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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 11 — Apr. 10, 2010
  • pp: 2105–2115

High-spatiotemporal-quality petawatt-class laser system

Hiromitsu Kiriyama, Mori Michiaki, Yoshiki Nakai, Takuya Shimomura, Hajime Sasao, Momoko Tanaka, Yoshihiro Ochi, Manabu Tanoue, Hajime Okada, Shuji Kondo, Shuhei Kanazawa, Akito Sagisaka, Izuru Daito, Daisuke Wakai, Fumitaka Sasao, Masayuki Suzuki, Hideyuki Kotakai, Kiminori Kondo, Akira Sugiyama, Sergei Bulanov, Paul R. Bolton, Hiroyuki Daido, Shunichi Kawanishi, John L. Collier, Cristina Hernandez-Gomez, Chris J. Hooker, Klaus Ertel, Toyoaki Kimura, and Toshiki Tajima  »View Author Affiliations


Applied Optics, Vol. 49, Issue 11, pp. 2105-2115 (2010)
http://dx.doi.org/10.1364/AO.49.002105


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Abstract

We have developed a femtosecond high-intensity laser system that combines both Ti:sapphire chirped-pulse amplification (CPA) and optical parametric CPA (OPCPA) techniques and produces more than 30 J broadband output energy, indicating the potential for achieving peak powers in excess of 500 TW . With a cleaned high-energy seeded OPCPA preamplifier as a front end in the system, for the compressed pulse without pumping the final amplifier, we found that the temporal contrast in this system exceeds 10 10 on the subnanosecond time scales, and is near 10 12 on the nanosecond time scale prior to the peak of the main femtosecond pulse. Using diffractive optical elements for beam homogenization of a 100 J level high-energy Nd:glass green pump laser in a Ti:sapphire final amplifier, we have successfully generated broadband high-energy output with a near-perfect top-hat-like intensity distribution.

© 2010 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(170.7160) Medical optics and biotechnology : Ultrafast technology
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(320.7090) Ultrafast optics : Ultrafast lasers
(230.4480) Optical devices : Optical amplifiers

ToC Category:
Ultrafast Optics

History
Original Manuscript: December 3, 2009
Revised Manuscript: March 15, 2010
Manuscript Accepted: March 15, 2010
Published: April 5, 2010

Citation
Hiromitsu Kiriyama, Mori Michiaki, Yoshiki Nakai, Takuya Shimomura, Hajime Sasao, Momoko Tanaka, Yoshihiro Ochi, Manabu Tanoue, Hajime Okada, Shuji Kondo, Shuhei Kanazawa, Akito Sagisaka, Izuru Daito, Daisuke Wakai, Fumitaka Sasao, Masayuki Suzuki, Hideyuki Kotakai, Kiminori Kondo, Akira Sugiyama, Sergei Bulanov, Paul R. Bolton, Hiroyuki Daido, Shunichi Kawanishi, John L. Collier, Cristina Hernandez-Gomez, Chris J. Hooker, Klaus Ertel, Toyoaki Kimura, and Toshiki Tajima, "High-spatiotemporal-quality petawatt-class laser system," Appl. Opt. 49, 2105-2115 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-11-2105


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References

  1. D. Strickland and G. Mourou, “Compression of amplified chirped optical pulses,” Opt. Commun. 56, 219-221 (1985). [CrossRef]
  2. D. Umstadter, “Review of physics and applications of relativistic plasmas driven by ultra-intense lasers,” Phys. Plasmas 8, 1774-1785 (2001). [CrossRef]
  3. T. Ditmire, S. Bless, G. Dyer, A. Edens, W. Grigsby, G. Hays, K. Madison, A. Maltsev, J. Colvin, M. J. Edwards, R. W. Lee, P. Patel, D. Price, B. A. Remington, R. Sheppherd, A. Wootton, J. Zweiback, E. Liang, and K. A. Kielty, “Overview of future directions in high energy-density and high-field science using ultra-intense lasers,” Radiat. Phys. Chem. 70, 535-552 (2004). [CrossRef]
  4. M. Aoyama, K. Yamakawa, Y. Akahane, J. Ma, N. Inoue, H. Ueda, and H. Kiriyama, “0.85 PW, 33 fs Ti:sapphire laser,” Opt. Lett. 28, 1594-1596 (2003). [CrossRef] [PubMed]
  5. X. Liang, Y. Leng, C. Wang, C. Li, L. Lin, B. Zhao, Y. Jiang, X. Lu, M. Hu, C. Zhang, H. Lu, D. Yin, Y. Jiang, X. Lu, H. Wei, J. Zhu, R. Li, and Z. Xu, “Parasitic lasing suppression in high gain femtosecond petawatt Ti:sapphire amplifier,” Opt. Express 15, 15335-15341 (2007). [CrossRef] [PubMed]
  6. Z. Y. Wei, Z. H. Wang, P. Wang, W. J. Ling, J. F. Zhu, H. N. Han, and J. Zhang, “A compact 355 TW femtosecond Ti:sapphire laser facility and trend to high contrast ratio,” J. Phys. Conf. Ser. 112, 032003 (2008). [CrossRef]
  7. S. Fourmaux, S. Payeur, A. Alexandrov, S. Serbanescu, F. Martin, T. Ozaki, A. Kudryashov, and J. C. Kieffer, “Laser beam wavefront correction for ultra high intensities with the 200 TW laser system at the advanced laser light source,” Opt. Express 16, 11987-11994 (2008). [CrossRef] [PubMed]
  8. V. Yanovsky, V. Chvykov, G. Kalinchenko, P. Rousseau, T. Planchon, T. Matsuoka, A. Maksimchuk, J. Nees, G. Cheriaux, G. Mourou, and K. Krushelnick, “Ultra-high intensity-300 TW laser at 0.1 Hz repetition rate,” Opt. Express 16, 2109-2114(2008). [CrossRef] [PubMed]
  9. C. J. Hoocker, J. L. Collier, O. Chekhlov, R. J. Clarke, E. J. Divall, K. Ertel, P. Foster, S. Hancock, S. J. Hawkes, P. Holligan, A. J. Langley, W. J. Lester, D. Neely, B. T. Parry, and B. E. Wyborn, “The Astra Gemini petawatt Ti:sapphire laser,” Rev. Laser Eng. 37, 443-448 (2009).
  10. S.-W. Bahk, P. Rousseau, T. A. Planchon, V. Chvykov, G. Kalintchenko, A. Maksimchuk, G. A. Mourou, and V. Yanovsky, “Generation and characterization of the highest laser intensities (1022W/cm2),” Opt. Lett. 29, 2837-2839 (2004). [CrossRef]
  11. T. Ceccotti, A. Lévy, H. Popescu, F. Réau, P. D'Oliveira, P. Monot, J. P. Geindre, E. Lefebvre, and P. Martin, “Proton acceleration with high-intensity ultrahigh-contrast laser pulses,” Phys. Rev. Lett. 99, 185002 (2007). [CrossRef] [PubMed]
  12. P. Antici, J. Fuchs, E. d'Humières, E. Lefebvre, M. Borghesi, E. Brambrink, C. A. Cecchetti, S. Gaillard, L. Romagnani, Y. Sentoku, T. Toncian, O. Willi, P. Audebert, and H. Pépin, “Energetic protons generated by ultrahigh contrast laser pulses interacting with ultrathin targets,” Phys. Plasmas 14, 030701(2007). [CrossRef]
  13. E. Esarey, C. B. Schroeder, and W. P. Leemans, “Physics of laser-driven plasma-based electron accelerators,” Rev. Mod. Phys. 81, 1229-1286 (2009). [CrossRef]
  14. Y. Fukuda, A. Ya. Faenov, M. Tampo, T. A. Pikuz, T. Nakamura, M. Kando, Y. Hayashi, A. Yogo, H. Sakaki, T. Kameshima, A. S. Pirozhkov, K. Ogura, M. Mori, T. Zh. Esirkepov, J. Koga, A. S. Boldarev, V. A. Gasilov, A. I. Magunov, T. Yamauchi, R. Kodama, P. R. Bolton, Y. Kato, T. Tajima, H. Daido, and S. V. Bulanov, “Energy increase in multi-MeV ion acceleration in the interaction of a short pulse laser with a cluster-gas target,” Phys. Rev. Lett. 103, 165002 (2009). [CrossRef] [PubMed]
  15. A. Rousse, K. T. Phuoc, R. Shah, A. Pukhov, E. Lefebvre, V. Malka, S. Kiselev, F. Burgy, J.-P. Rousseau, D. Umstadter, and D. Hulin, “Production of a keV x-ray bean from synchrotron radiation in relativistic laser-plasma interaction,” Phys. Rev. Lett. 93, 135005 (2004). [CrossRef] [PubMed]
  16. M. Kando, Y. Fukuda, A. S. Pirozhkov, J. Ma, I. Daito, L.-M. Chen, T. Zh. Esirkepov, K. Ogura, T. Homma, Y. Hayashi, H. Kotaki, A. Sagisaka, M. Mori, J. K. Koga, H. Daido, S. V. Bulanov, T. Kimura, Y. Kato, and T. Tajima, “Demonstration of laser-frequency upshift by electron-density modulations in a plasma wakefield,” Phys. Rev. Lett. 99, 135001 (2007). [CrossRef] [PubMed]
  17. Y. Fukuda, A. Ya. Faenov, T. Pikuz, M. Kando, H. Kotaki, I. Daito, J. Ma, L. M. Chen, T. Homma, K. Kawase, T. Kameshima, T. Kawachi, H. Daido, T. Kimura, T. Tajima, Y. Kato, and S. V. Bulanov, “Soft x-ray source for nanostructure imaging using femtosecond-laser-irradiated clusters,” Appl. Phys. Lett. 92, 121110 (2008). [CrossRef]
  18. K. Ogura, T. Shizuma, T. Hayakawa, A. Yogo, M. Nishiuchi, S. Orimo, A. Sagisaka, A. Pirozhkov, M. Mori, H. Kiriyama, S. Kanazawa, S. Kondo, Y. Nakai, T. Shimoura, M. Tanoue, A. Akutsu, T. Motomura, H. Okada, T. Kimura, Y. Oishi, T. Nayuki, T. Fujii, K. Nemoto, and H. Daido, “Proton-induced nuclear reactions using compact high-contrast high-intensity laser,” Appl. Phys. Exp. 2, 066001 (2009). [CrossRef]
  19. B. Dromey, M. Zepf, A. Gopal, K. Lancaster, M. S. Wei, K. Krusheknick, M. Tatarakis, N. Vakakis, S. Moustaizis, R. Kodama, M. Tanpo, C. Stoeckl, R. Clarke, H. Habara, D. Neely, S. Karsch, and P. Norreys, “High harmonic generation in the relativistic limit,” Nature Phys. 2, 456-459 (2006). [CrossRef]
  20. D. Neely, P. Foster, A. Robinson, F. Lindau, O. Lundh, A. Persson, C. G. Wahlström, and P. McKenna, “Enhanced proton beams from ultrathin targets driven by high contrast laser pulse,” Appl. Phys. Lett. 89, 021502 (2006). [CrossRef]
  21. J. Itatani, J. Faure, M. Nantel, G. Mourou, and S. Watanabe, “Suppression of the amplified spontaneous emission in chirped-pulse-amplification lasers by clean high-energy seed-pulse injection,” Opt. Commun. 148, 70-74 (1998). [CrossRef]
  22. H. Kiriyama, M. Mori, Y. Nakai, T. Shimomura, M. Tanoue, A. Akutsu, H. Okada, T. Motomura, S. Kondo, S. Kanazawa, A. Sagisaka, J. Ma, I. Daito, H. Kotaki, H. Daido, S. Bulanov, T. Kimura, and T. Tajima, “Generation of high-contrast and high-intensity laser pulses using an OPCPA preamplifier in a double CPA, Ti:sapphire laser system,” Opt. Commun. 282, 625-628 (2009). [CrossRef]
  23. A. Renault, F. A. Rochereau, T. Planchon, P. D. Oliveira, T. Auguste, G. Chériaux, and J. P. Chambaret, “ASE contrast improvement with a non-linear filtering Sagnac interferometer,” Opt. Commun. 248, 535-541 (2005). [CrossRef]
  24. M. P. Kalashnikov, E. Risse, H. Schönnagel, and W. Sandner, “Double chirped-pulse-amplification laser: a way to clean pulses temporally,” Opt. Lett. 30, 923-925 (2005). [CrossRef] [PubMed]
  25. N. Minkovski, G. I. Petrov, S. M. Saltiel, O. Albert, and J. Etchepare, “Nonlinear polarization rotation and orthogonal polarization generation experienced in a single-beam confiligguration,” J. Opt. Soc. Am. B 21, 1659-1664 (2004). [CrossRef]
  26. A. Jullien, O. Albert, F. Burgy, G. Hamoniaux, J. P. Rousseau, J. P. Chambaret, F. Augé-Rochereau, G. Chériaux, J. Etchepare, N. Minkovski, and S. M. Saltiel, “10−10 temporal contrast for femtosecond ultraintense lasers by cross-polarized wave generation,” Opt. Lett. 30, 920-922 (2005). [CrossRef] [PubMed]
  27. G. Doumy, F. Quéré, O. Gobert, M. Perdrix, Ph. Martin, P. Audebert, J. C. Gauthier, J. P. Geindre, and T. Wittmann, “Complete characterization of a plasma mirror for the production of high-contrast ultraintense laser pulses,” Phys. Rev. E 69, 026402 (2004). [CrossRef]
  28. C. Thaur, F. Quéré, J.-P. Geindre, A. Levy, T. Ceccotti, P. Monot, M. Bougeard, F. Réau, P. D'okiveira, P. Audebert, R. Marjoribanks, and P. H. Martin, “Plasma mirrors for ultrahigh-intensity optics,” Nature Phys. 3, 424-429 (2007). [CrossRef]
  29. V. Chvykov, P. Rousseau, S. Reed, G. Kalinchenko, and V. Yanovsky, “Generation of 1011 contrast 50 TW laser pulses,” Opt. Lett. 31, 1456-1458 (2006). [CrossRef] [PubMed]
  30. L. Antonucci, J. P. Rousseau, A. Jullien, B. Mercier, V. Laude, and G. Cheriaux, “14 fs high temporal quality injector for ultra-high intensity laser,” Opt. Commun. 282, 1374-1379(2009). [CrossRef]
  31. A. Dubietis, G. Jonusauskas, and A. Piskarskas, “Powerful femtosecond pulse generation by chirped and stretched pulse parametric amplification in BBO crystal,” Opt. Commun. 88, 437-440 (1992). [CrossRef]
  32. I. N. Ross, P. Matousek, M. Towrie, A. J. Langley, and J. L. Collier, “The prospects for ultrashort pulse duration and ultrahigh intensity using optical parametric chirped pulse amplifiers,” Opt. Commun. 144, 125-133 (1997). [CrossRef]
  33. Y. Kitagawa, H. Fujita, R. Kodama, H. Yoshida, S. Matsuo, T. Jitsuno, T. Kawasaki, H. Kitamura, T. Kanabe, S. Sakabe, K. Shigemori, N. Miyanaga, and Y. Izawa, “Prepulse-free petawatt laser for a fast ignitor,” IEEE J. Quantum Electron. 40, 281-293 (2004). [CrossRef]
  34. I. O. Musgrave, C. Hernandez-Gomez, D. Canny, J. Collier, and R. Heathcote, “Minimization of the impact of a broad bandwidth high-gain nonlinear preamplifier to the amplified spontaneous emission pedestal of the Vulcan petawatt laser facility,” Appl. Opt. 46, 6978-6983 (2007). [CrossRef] [PubMed]
  35. N. Blanchot, G. Behar, T. Berthier, E. Bignon, F. Boubault, C. Chappuis, H. Coïc, C. Damiens-Dupont, J. Ebrardt, Y. Gautheron, P. Gibert, O. Hartmann, E. Hugonnot, F. Laborde, D. Lebeaux, J. Luce, S. Montant, S. Noailles, J. N´eauport, D. Raffestin, B. Remy, A. Roques, F. Sautarel, M. Sautet, C. Sauteret, and C. Rouyer, “Overview of PETAL, multi-petawatt project on the LIL facility,” Plasma Phys. Controlled Fusion 50, 124045 (2008). [CrossRef]
  36. J. Schwarz, P. Rambo, M. Geissel, M. Kimmel, E. Brambrink, B. Atherton, and J. Glassman, “A hybrid OPCPA/Nd:phosphate glass multi-terawatt laser system for seeding of a petawatt laser,” Opt. Commun. 281, 4984-4992 (2008). [CrossRef]
  37. F. Ple, M. Pittman, G. Jamelot, and J. P. Chambaret, “Design and demonstration of a high-energy booster amplifier for a high-repetition rate petawatt class laser system,” Opt. Lett. 32, 238-240 (2007). [CrossRef] [PubMed]
  38. K. Ertel, C. Hooker, S. J. Hawkes, B. T. Parry, and J. L. Collier, “ASE suppression in a high energy titanium sapphire amplifier,” Opt. Express 16, 8039-8049 (2008). [CrossRef] [PubMed]
  39. G. Cheriaux, P. Rousseau, F. Salin, J. P. Chambaret, B. Walker, and L. F. Dimauro, “Aberration-free stretcher design for ultrashort-pulse amplification,” Opt. Lett. 21, 414-416 (1996). [CrossRef] [PubMed]
  40. F. Tavella, A. Marcinkevicius, and F. Krausz, “Investigation of the superflliguorescence and signal amplifiligcation in an ultrabroadband multiterawatt optical parametric chirped pulse amplifiliger system,” New J. Phys. 8, 219 (2006). [CrossRef]
  41. H. Okada, H. Kiriyama, M. Mori, Y. Nakai, T. Shimomura, M. Tanoue, S. Kondo, S. Kanazawa, H. Daido, T. Kimura, and T. Tajima, “Demonstration of highly efficient broadband amplification in an optical parametric chirped-pulse amplifier system,” Opt. Rev. 16, 1-3 (2009). [CrossRef]
  42. R. C. Shah, R. P. Johnson, T. Shimada, K. A. Flippo, J. C. Fernandez, and B. M. Hegelich, “High-temporal contrast using low-gain optical parametric amplifiligcation,” Opt. Lett. 34, 2273-2275 (2009). [CrossRef] [PubMed]
  43. H. Kiriyama, M. Mori, Y. Nakai, Y. Yamamoto, M. Tanoue, A. Akutsu, T. Shimomura, S. Kondo, S. Kanazawa, H. Daido, T. Kimura, and N. Miyanaga, “High-energy, high-contrast, multiterawatt laser pulses by optical parametric chirped-pulse amplification,” Opt. Lett. 32, 2315-2317 (2007). [CrossRef] [PubMed]
  44. V. Bagnoud, I. A. Begishev, M. J. Guardalben, J. Puth, and J. D. Zuegel, “5 Hz, >250 mJ optical parametric chirped-pulse amplifier at 1053 nm,” Opt. Lett. 30, 1843-1845 (2005). [CrossRef] [PubMed]
  45. P. Wnuk, Y. Stepanenko, and C. Radzewicz, “Multi-terawatt chirped pulse optical parametric amplifier with a time-shear power amplification stage,” Opt. Express 17, 15264-15273(2009). [CrossRef] [PubMed]
  46. O. V. Chekhlov, J. L. Collier, I. N. Ross, P. K. Bates, M. Notley, C. Hernandez-Gomez, W. Shaikh, C. N. Danson, D. Neely, P. Matousek, and S. Hancock, “35 J broadband femtosecond optical parametric chirped pulse amplification system,” Opt. Lett. 31, 3665-3667 (2006). [CrossRef] [PubMed]
  47. M. Suzuki, H. Kiriyama, I. Daito, H. Okada, Y. Nakai, S. Orimo, M. Sato, Y. Tamaoki, T. Yoshii, J. Maeda, S. Matsuoka, H. Kan, P. R. Bolton, H. Daido, and S. Kawanishi, “Multi-millijoule, nonlinear preamplifier for high intensity femtosecond Yb:YAG chirped-pulse amplification lasers at 1030 nm,” Appl. Phys. B 97, 379-382 (2009). [CrossRef]
  48. H. Kiriyama, N. Inoue, Y. Akahane, and K. Yamakawa, “Prepulse-free, multi-terawatt, sub-30 fs laser system,” Opt. Express 14, 438-445 (2006). [CrossRef] [PubMed]
  49. M. Pittman, S. Ferré, J. P. Rousseau, L. Notebaert, J. P. Chambaret, and G. Chériaux, “Design and characterization of a near-diffraction-limited femtosecond 100 TW10 Hz high-intensity laser system,” Appl. Phys. B 74, 529-535(2002). [CrossRef]
  50. H. Kiriyama, M. Mori, Y. Nakai, T. Shimomura, M. Tanoue, A. Akutsu, S. Kondo, S. Kanazawa, H. Okada, T. Motomura, H. Daido, T. Kimura, and T. Tajima, “High-contrast, high-intensity laser pulse generation using a nonlinear preamplifiliger in a Ti:sapphire laser system,” Opt. Lett. 33, 645-647(2008). [CrossRef] [PubMed]
  51. T. A. Planchon, W. Amir, C. Childress, J. A. Squier, and C. G. Durfee, “Measurement of pump-induced transient lensing in a cryogenically-cooled high average power Ti:sapphire amplifier,” Opt. Express 16, 18557-18564 (2008). [CrossRef]
  52. D. Eimerl, “Quadrature frequency conversion,” IEEE J. Quantum Electron. 23, 1361-1371 (1987). [CrossRef]
  53. H. Kiriyama, F. Nakano, and K. Yamakawa, “High-efficiency frequency doubling of a Nd:YAG laser in a two-pass quadrature frequency-conversion scheme using CsLiB6O10 crystals,” J. Opt. Soc. Am. B 19, 1857-1864 (2002). [CrossRef]
  54. M. Tanaka, H. Kiriyama, Y. Ochi, Y. Nakai, H. Sasao, H. Okada, H. Daido, P. Bolton, and S. Kawanishi, “High-energy, spatially flligat-top green pump laser by beam homogenization for petawatt scale Ti:sapphire laser systems,” Opt. Commun. 282, 4401-4403 (2009). [CrossRef]
  55. H. Kiriyama, M. Tanaka, Y. Ochi, Y. Nakai, H. Sasao, H. Okada, M. Mori, T. Shimomura, S. Kanazawa, H. Daido, P. Bolton, and S. Kawanishi, “100 J level green laser beam homogenization to pump a petawatt class Ti:sapphire chirped-pulse amplification laser system,” Rev. Laser Eng. 37, 467-469 (2009).
  56. F. G. Patterson, J. Bonlie, D. Price, and B. White, “Suppression of parasitic lasing in large-aperture Ti:sapphire laser amplifiers,” Opt. Lett. 24, 963-965 (1999). [CrossRef]
  57. N. Forget, A. Cotel, E. Brambrink, P. Audebert, C. L. Blanc, A. Jullien, O. Albert, and G. Chériaux, “Pump-noise transfer in optical parametric chirped-pulse amplifiligcation,” Opt. Lett. 30, 2921-2923 (2005). [CrossRef] [PubMed]
  58. V. Bagnoud, J. D. Zuegel, N. Forget, and C. Le Blanc, “High-dynamic-range temporal measurements of short pulses amplified by OPCPA,” Opt. Express 15, 5504-5511 (2007). [CrossRef] [PubMed]
  59. L. M. Frantz and J. S. Nodvik, “Theory of pulse propagation in a laser amplifier,” J. Appl. Phys. 34, 2346-2349 (1963). [CrossRef]
  60. K.-H. Hong, B. Hou, J. A. Nees, E. Power, and G. A. Mourou, “Generation and measurement of >108 intensity contrast ratio in a relativistic kHz chirped-pulse amplified laser,” Appl. Phys. B 81, 447-457 (2005). [CrossRef]

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