Abstract

Substantial power scaling of a travelling-wave femtosecond optical parametric amplifier, pumped near 800 nm by a 1 kHz Ti:sapphire laser amplifier, is demonstrated using monoclinic BiB3O6 in a two stage scheme with continuum seeding. Total energy output (signal plus idler) exceeding 1 mJ is achieved, corresponding to an intrinsic conversion efficiency of ≈32% for the second stage. The tunability extends from 1.1 to 2.9 μm. The high parametric gain and broad amplification bandwidth of this crystal allowed the maintenance of the pump pulse duration, leading to pulse lengths less than 140 fs, both for the signal and idler pulses, even at such high output levels.

© 2007 Optical Society of America

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  1. F. Seifert, V. Petrov, and F. Noack, "Sub-100-fs optical parametric generator pumped by a high-repetition-rate Ti:sapphire regenerative amplifier system," Opt. Lett. 19, 837-839 (1994).
    [CrossRef] [PubMed]
  2. V. Petrov, F. Seifert, and F. Noack, "High repetition rate traveling wave optical parametric generator producing nearly bandwidth limited 50 fs infrared light pulses," Appl. Phys. Lett. 65, 268-270 (1994).
    [CrossRef]
  3. G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
    [CrossRef]
  4. G. Cerullo and S. De Silvestri, "Ultrafast optical parametric amplifiers," Rev. Sci. Instrum. 74, 1-18 (2003).
    [CrossRef]
  5. V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
    [CrossRef]
  6. M. Nisoli, S. De Silvestri, V. Magni, O. Svelto, R. Danielius, A. Piskarskas, G. Valiulis, and A. Varanavicius, "Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz," Opt. Lett. 19, 1973-1975 (1994).
    [CrossRef] [PubMed]
  7. K. R. Wilson and V. V. Yakovlev, "Ultrafast rainbow: tunable ultrashort pulses from a solid-state kilohertz system," J. Opt. Soc. Am. B 14, 444-448 (1997).
    [CrossRef]
  8. R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).
  9. H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
    [CrossRef]
  10. H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
    [CrossRef]
  11. M. Ghotbi, A. Esteban-Martin, and M. Ebrahim-Zadeh, "Optical parametric generation and amplification in BiB3O6," Conference on Lasers and Electro-Optics CLEO 2006, OSA Technical Digest CD-ROM (OSA, Washington, DC 2006), paper JThC64.
  12. M. Ghotbi, M. Ebrahim-Zadeh, V. Petrov, P. Tzankov, and F. Noack, "Efficient 1kHz femtosecond optical parametric amplification in BiB3O6 pumped at 800 nm," Opt. Express  14, 10621-10626 (2006).
    [CrossRef]
  13. P. Tzankov and O. Steinkellner, "High-energy Ti:sapphire laser system at 1 kHz optimised for efficient frequency conversion," Conference on Lasers and Electro-Optics, CLEO/Europe-EQEC'05, Munich, Germany, June 12-17, 2005, paper CA8-1-TUE, CLEO/Europe-EQEC 2005 Conference Digest CD-ROM.
  14. R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
    [CrossRef]
  15. P. Tzankov and V. Petrov, "Effective second-order nonlinearity in acentric optical crystals with low symmetry," Appl. Opt. 44, 6971-6985 (2005).
    [CrossRef] [PubMed]
  16. B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
    [CrossRef]

2006 (1)

2005 (1)

2003 (1)

G. Cerullo and S. De Silvestri, "Ultrafast optical parametric amplifiers," Rev. Sci. Instrum. 74, 1-18 (2003).
[CrossRef]

2001 (1)

V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
[CrossRef]

2000 (2)

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
[CrossRef]

1999 (1)

H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
[CrossRef]

1997 (1)

1994 (3)

1993 (2)

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

1982 (1)

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Banfi, G. P.

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

Bareika, B.

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Birmontas, A.

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Bohaty, L.

H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
[CrossRef]

H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
[CrossRef]

Cerullo, G.

G. Cerullo and S. De Silvestri, "Ultrafast optical parametric amplifiers," Rev. Sci. Instrum. 74, 1-18 (2003).
[CrossRef]

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

Danielius, R.

M. Nisoli, S. De Silvestri, V. Magni, O. Svelto, R. Danielius, A. Piskarskas, G. Valiulis, and A. Varanavicius, "Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz," Opt. Lett. 19, 1973-1975 (1994).
[CrossRef] [PubMed]

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

De Silvestri, S

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

De Silvestri, S.

Di Trapani, P.

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

Dikchyus, G.

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Ebrahim-Zadeh, M.

Ghotbi, M.

Hellwig, H.

H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
[CrossRef]

H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
[CrossRef]

Liebertz, J.

H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
[CrossRef]

H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
[CrossRef]

Magni, V.

Nisoli, M.

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

M. Nisoli, S. De Silvestri, V. Magni, O. Svelto, R. Danielius, A. Piskarskas, G. Valiulis, and A. Varanavicius, "Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz," Opt. Lett. 19, 1973-1975 (1994).
[CrossRef] [PubMed]

Noack, F.

M. Ghotbi, M. Ebrahim-Zadeh, V. Petrov, P. Tzankov, and F. Noack, "Efficient 1kHz femtosecond optical parametric amplification in BiB3O6 pumped at 800 nm," Opt. Express  14, 10621-10626 (2006).
[CrossRef]

V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
[CrossRef]

V. Petrov, F. Seifert, and F. Noack, "High repetition rate traveling wave optical parametric generator producing nearly bandwidth limited 50 fs infrared light pulses," Appl. Phys. Lett. 65, 268-270 (1994).
[CrossRef]

F. Seifert, V. Petrov, and F. Noack, "Sub-100-fs optical parametric generator pumped by a high-repetition-rate Ti:sapphire regenerative amplifier system," Opt. Lett. 19, 837-839 (1994).
[CrossRef] [PubMed]

Persson, A.

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

Petrov, V.

M. Ghotbi, M. Ebrahim-Zadeh, V. Petrov, P. Tzankov, and F. Noack, "Efficient 1kHz femtosecond optical parametric amplification in BiB3O6 pumped at 800 nm," Opt. Express  14, 10621-10626 (2006).
[CrossRef]

P. Tzankov and V. Petrov, "Effective second-order nonlinearity in acentric optical crystals with low symmetry," Appl. Opt. 44, 6971-6985 (2005).
[CrossRef] [PubMed]

V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
[CrossRef]

V. Petrov, F. Seifert, and F. Noack, "High repetition rate traveling wave optical parametric generator producing nearly bandwidth limited 50 fs infrared light pulses," Appl. Phys. Lett. 65, 268-270 (1994).
[CrossRef]

F. Seifert, V. Petrov, and F. Noack, "Sub-100-fs optical parametric generator pumped by a high-repetition-rate Ti:sapphire regenerative amplifier system," Opt. Lett. 19, 837-839 (1994).
[CrossRef] [PubMed]

Piskarskas, A.

M. Nisoli, S. De Silvestri, V. Magni, O. Svelto, R. Danielius, A. Piskarskas, G. Valiulis, and A. Varanavicius, "Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz," Opt. Lett. 19, 1973-1975 (1994).
[CrossRef] [PubMed]

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Righini, R.

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

Rotermund, F.

V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
[CrossRef]

Sartania, S.

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

Seifert, F.

V. Petrov, F. Seifert, and F. Noack, "High repetition rate traveling wave optical parametric generator producing nearly bandwidth limited 50 fs infrared light pulses," Appl. Phys. Lett. 65, 268-270 (1994).
[CrossRef]

F. Seifert, V. Petrov, and F. Noack, "Sub-100-fs optical parametric generator pumped by a high-repetition-rate Ti:sapphire regenerative amplifier system," Opt. Lett. 19, 837-839 (1994).
[CrossRef] [PubMed]

Sirutkaitis, V.

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Stabinis, A.

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Stagira, S.

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

Svanberg, S.

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

Svelto, O.

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

M. Nisoli, S. De Silvestri, V. Magni, O. Svelto, R. Danielius, A. Piskarskas, G. Valiulis, and A. Varanavicius, "Highly efficient parametric conversion of femtosecond Ti:sapphire laser pulses at 1 kHz," Opt. Lett. 19, 1973-1975 (1994).
[CrossRef] [PubMed]

Tzankov, P.

Valiulis, G.

Varanavicius, A.

Wilson, K. R.

Yakovlev, V. V.

Appl. Opt. (1)

Appl. Phys. Lett. (1)

V. Petrov, F. Seifert, and F. Noack, "High repetition rate traveling wave optical parametric generator producing nearly bandwidth limited 50 fs infrared light pulses," Appl. Phys. Lett. 65, 268-270 (1994).
[CrossRef]

IEEE J. Sel. Top. Quantum. Electron. (1)

G. Cerullo, S De Silvestri, M. Nisoli, S. Sartania, S. Stagira, and O. Svelto, "Few-optical-cycle laser pulses: From high peak power to frequency tunability," IEEE J. Sel. Top. Quantum. Electron. 6, 948-958 (2000).
[CrossRef]

J. Appl. Phys. (1)

H. Hellwig, J. Liebertz, and L. Bohaty, "Linear optical properties of the monoclinic bismuth borate BiB3O6," J. Appl. Phys. 88, 240-244 (2000).
[CrossRef]

J. Opt. A: Pure Appl. Opt. (1)

V. Petrov, F. Rotermund, and F. Noack, "Generation of high-power femtosecond light pulses at 1 kHz in the mid-infrared spectral range between 3 and 12 µm by second-order nonlinear processes in optical crystals," J. Opt. A: Pure Appl. Opt. 3, R1-R19 (2001).
[CrossRef]

J. Opt. Soc. Am. (1)

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, and R. Righini, "Traveling-wave parametric generation of widely tunable, highly coherent femtosecond light pulses," J. Opt. Soc. Am. 10, 2222-2232 (1993).
[CrossRef]

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

Lith. J. Phys. (1)

R. Danielius, A. Piskarskas, A. Persson, and S. Svanberg, "Widely tunable β-BaB2O4 parametric laser pumped by femtosecond Ti:sapphire laser-amplifier system," Lith. J. Phys. 33, 245-248 (1993).

Opt. Express (1)

Opt. Lett. (2)

Rev. Sci. Instrum. (1)

G. Cerullo and S. De Silvestri, "Ultrafast optical parametric amplifiers," Rev. Sci. Instrum. 74, 1-18 (2003).
[CrossRef]

Solid State Commun. (1)

H. Hellwig, J. Liebertz, and L. Bohaty, "Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB3O6 (BIBO)," Solid State Commun. 109, 249-251 (1999).
[CrossRef]

Sov. J. Quantum Electron. (1)

B. Bareika, A. Birmontas, G. Dikchyus, A. Piskarskas, V. Sirutkaitis, and A. Stabinis, "Parametric generation of picosecond continuum in near-infrared and visible ranges on the basis of a quadratic nonlinearity," Sov. J. Quantum Electron. 12, 1654-1656 (1982) [transl. from Kvantovaya Elektron. (Moscow) 9, 2534-2536 (1982)].
[CrossRef]

Other (2)

M. Ghotbi, A. Esteban-Martin, and M. Ebrahim-Zadeh, "Optical parametric generation and amplification in BiB3O6," Conference on Lasers and Electro-Optics CLEO 2006, OSA Technical Digest CD-ROM (OSA, Washington, DC 2006), paper JThC64.

P. Tzankov and O. Steinkellner, "High-energy Ti:sapphire laser system at 1 kHz optimised for efficient frequency conversion," Conference on Lasers and Electro-Optics, CLEO/Europe-EQEC'05, Munich, Germany, June 12-17, 2005, paper CA8-1-TUE, CLEO/Europe-EQEC 2005 Conference Digest CD-ROM.

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Figures (6)

Fig. 1.
Fig. 1.

Schematic of the experimental set-up: CPA, chirped pulse amplifier, OPA1 and OPA2, 1st and 2nd OPA stages, DL, delay lines, ID, iris diaphragm, Sa, sapphire, AC, autocorrelator. The parameters in brackets refer to the high-power version; a and b denote two possible positions of the same half-wave plate (λ/2).

Fig. 2.
Fig. 2.

(a). Inverse group velocity mismatch (GVM) between the pump and idler (1/vP–1/vI, black lines) and between the pump and signal (1/vP–1/vS, red lines) in type-I, e→oo interaction in BIBO and BBO for a pump wavelength of 800 nm, where vP, vS, and vI denote the pump, signal, and idler group velocities; the blue and green lines show the gain bandwidth (FWHM) for a 6 mm long BIBO type e→oo crystal and a pump intensity of 20 GW/cm2, calculated using the first and second order expansion terms in the wave-mismatch, respectively. (b) Phase-matching curves for a BIBO, type e→oo OPA, calculated for several pump wavelengths indicated in the figure.

Fig. 3.
Fig. 3.

Autocorrelation trace (symbols) and Gaussian fit (curve) of the compressed signal pulse at 1200 nm from the low-power OPA. The inset shows the corresponding spectrum.

Fig. 4.
Fig. 4.

Autocorrelation trace (symbols) and Gaussian fit (curve) of the signal pulse at 1120 nm from the high-power OPA with seeding at the signal wave. The inset shows the corresponding spectrum.

Fig. 5.
Fig. 5.

Spectra of the high-power OPA with idler seeding, recorded for two signal-idler pairs at a total output energy of 600 μJ (near degeneracy) and 800 μJ (away from degeneracy).

Fig. 6.
Fig. 6.

Autocorrelation traces (symbols) and Gaussian fits (curves) with FWHM for the signal and idler pulses corresponding to the spectra from Fig. 5. The time-bandwidth products are also given in the figure.

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