Abstract

We report the first ever femtosecond supercontinuum generation in a KDP crystal using ~100 fs pulses at 790 nm irradiation. Due to the quadratic nonlinearities of the KDP crystal an enhanced bandwidth of 385–960 nm is generated. The spatial and temporal coherence of the generated white light is demonstrated using Young’s double slit interference configuration and a Michelson interferometer.

© 2005 Optical Society of America

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  1. R. R. Alfano and S. L. Shapiro, “Observation of self-phase modulation and small-scale filaments in crystals and glasses,” Phys. Rev. Lett. 24, 592–594 (1970).
    [CrossRef]
  2. R. R. Alfano, The Supercontinuum laser source, Springer-Verlag, Berlin (1989).
  3. V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
    [CrossRef]
  4. R. L. Fork, C. V. Shank, C. Hirlimann, R. Yen, and W. J. Tomlinson, “Femtosecond white-light continuum pulses,” Opt. Lett. 8, 1–3 (1983).
    [CrossRef] [PubMed]
  5. P. B. Corkum, C. Rolland, and T. Srinivasan Rao, “Supercontinuum generation in gases,” Phys. Rev. Lett. 57, 2268–2271 (1986).
    [CrossRef] [PubMed]
  6. A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
    [CrossRef]
  7. G. Yang and Y. R. Shen, “Spectral broadening of ultrashort pulses in a nonlinear medium,” Opt. Lett. 9, 510–512 (1984).
    [CrossRef] [PubMed]
  8. P. B. Corkum, P. P. Ho, R. R. Alfano, and J. T. Manassah, “Generation of infrared supercontinuum covering 3–14 µm in dielectrics and semiconductors,” Opt. Lett. 10, 624–626 (1985).
    [CrossRef] [PubMed]
  9. A. Brodeur and S. L. Chin, “Band-gap dependence of the ultrafast white light continuum,” Phys. Rev. Lett. 80, 4406–4409 (1998).
    [CrossRef]
  10. A. Brodeur and S. L. Chin, “Ultrafast white light continuum generation and self-focusing in transparent condensed media,” J. Opt. Soc. Am. B 16, 637–650 (1999).
    [CrossRef]
  11. A. K. Dharmadhikari, F. A. Rajgara, N. C. S. Reddy, A. S. Sandhu, and D. Mathur, “Highly efficient white light generation from barium fluoride,” Opt. Express 12, 695–700 (2004), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-4-695
    [CrossRef] [PubMed]
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    [CrossRef]
  13. T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
    [CrossRef] [PubMed]
  14. S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
    [CrossRef]
  15. T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime”, App. Phys. B 70, S239–S246 (2000).
    [CrossRef]
  16. 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]
  17. A. Baltuska and T. Kobayashi, “Adaptive shaping of two-cycle visible pulses using a flexible mirror,” App. Phys. B 75, 427–443 (2002).
    [CrossRef]
  18. Pei-Lin Hsiung, Yu Chen, Tony H. Ko, James G. Fujimoto, C. J. S. de Matos, S. V. Popov, J. R. Taylor, and V. P. Gapontsev, “Optical coherence tomography using a continuous-wave, high-power, Raman continuum light source, “Opt. Express 12, 5287–5295(2004), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-22-5287
    [CrossRef] [PubMed]
  19. E. Hugonnot, M. Somekh, D. Villate, F. Salin, and E. Freysz, “Optical parametric chirped pulse amplification and spectral shaping of a continuum generated in a photonic band gap fiber,” Opt. Express 12, 2397–2403 (2004), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
    [CrossRef] [PubMed]
  20. M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
    [CrossRef] [PubMed]
  21. A. Yariv, Quantum Electronics, John Wiley & Sons, New York, USA, 1988.
  22. V. G. Dimitriev, G. G. Gurzaddyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals, 2nd revised ed. (Springer, Berlin, 1977).
  23. R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
    [CrossRef]
  24. K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
    [CrossRef]
  25. W. Watanabe and K. Itoh, “Spatial coherence of supercontinuum emitters from multiple filaments,” Jpn. J. Appl. Phys. 40, 592–595 (2001).
    [CrossRef]

2004 (3)

2003 (2)

K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
[CrossRef]

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

2002 (1)

A. Baltuska and T. Kobayashi, “Adaptive shaping of two-cycle visible pulses using a flexible mirror,” App. Phys. B 75, 427–443 (2002).
[CrossRef]

2001 (2)

T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
[CrossRef] [PubMed]

W. Watanabe and K. Itoh, “Spatial coherence of supercontinuum emitters from multiple filaments,” Jpn. J. Appl. Phys. 40, 592–595 (2001).
[CrossRef]

2000 (2)

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime”, App. Phys. B 70, S239–S246 (2000).
[CrossRef]

1999 (1)

1998 (1)

A. Brodeur and S. L. Chin, “Band-gap dependence of the ultrafast white light continuum,” Phys. Rev. Lett. 80, 4406–4409 (1998).
[CrossRef]

1997 (1)

1996 (1)

A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
[CrossRef]

1986 (2)

P. B. Corkum, C. Rolland, and T. Srinivasan Rao, “Supercontinuum generation in gases,” Phys. Rev. Lett. 57, 2268–2271 (1986).
[CrossRef] [PubMed]

J. H. Glownia, J. Misewich, and P. P. Sorokin, “Ultrafast ultraviolet pump-probe apparatus,” J. Opt. Soc. Am. B 3, 1573–1579 (1986).
[CrossRef]

1985 (1)

1984 (1)

1983 (1)

1970 (1)

R. R. Alfano and S. L. Shapiro, “Observation of self-phase modulation and small-scale filaments in crystals and glasses,” Phys. Rev. Lett. 24, 592–594 (1970).
[CrossRef]

1968 (1)

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Akahane, Y.

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

Akozbek, N.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Alfano, R. R.

P. B. Corkum, P. P. Ho, R. R. Alfano, and J. T. Manassah, “Generation of infrared supercontinuum covering 3–14 µm in dielectrics and semiconductors,” Opt. Lett. 10, 624–626 (1985).
[CrossRef] [PubMed]

R. R. Alfano and S. L. Shapiro, “Observation of self-phase modulation and small-scale filaments in crystals and glasses,” Phys. Rev. Lett. 24, 592–594 (1970).
[CrossRef]

R. R. Alfano, The Supercontinuum laser source, Springer-Verlag, Berlin (1989).

Aoyama, M.

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

Baltuska, A.

A. Baltuska and T. Kobayashi, “Adaptive shaping of two-cycle visible pulses using a flexible mirror,” App. Phys. B 75, 427–443 (2002).
[CrossRef]

Becker, A.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Bowden, C. M.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Brewer, R. G.

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Brodeur, A.

A. Brodeur and S. L. Chin, “Ultrafast white light continuum generation and self-focusing in transparent condensed media,” J. Opt. Soc. Am. B 16, 637–650 (1999).
[CrossRef]

A. Brodeur and S. L. Chin, “Band-gap dependence of the ultrafast white light continuum,” Phys. Rev. Lett. 80, 4406–4409 (1998).
[CrossRef]

A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
[CrossRef]

Chen, Yu

Chiao, R. Y.

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Chin, S. L.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

A. Brodeur and S. L. Chin, “Ultrafast white light continuum generation and self-focusing in transparent condensed media,” J. Opt. Soc. Am. B 16, 637–650 (1999).
[CrossRef]

A. Brodeur and S. L. Chin, “Band-gap dependence of the ultrafast white light continuum,” Phys. Rev. Lett. 80, 4406–4409 (1998).
[CrossRef]

A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
[CrossRef]

Cook, K.

K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
[CrossRef]

Corkum, P. B.

Cussat-Blanc, S.

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

de Matos, C. J. S.

Dharmadhikari, A. K.

Dimitriev, V. G.

V. G. Dimitriev, G. G. Gurzaddyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals, 2nd revised ed. (Springer, Berlin, 1977).

Fork, R. L.

Freysz, E.

E. Hugonnot, M. Somekh, D. Villate, F. Salin, and E. Freysz, “Optical parametric chirped pulse amplification and spectral shaping of a continuum generated in a photonic band gap fiber,” Opt. Express 12, 2397–2403 (2004), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

Fujimoto, James G.

Gapontsev, V. P.

Garmire, E.

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Glownia, J. H.

Golubtsov, I. S.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Gurzaddyan, G. G.

V. G. Dimitriev, G. G. Gurzaddyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals, 2nd revised ed. (Springer, Berlin, 1977).

Harimoto, T.

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

Hirlimann, C.

Ho, P. P.

Hsiung, Pei-Lin

Hugonnot, E.

Ilkov, F. A.

A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
[CrossRef]

Itoh, K.

W. Watanabe and K. Itoh, “Spatial coherence of supercontinuum emitters from multiple filaments,” Jpn. J. Appl. Phys. 40, 592–595 (2001).
[CrossRef]

Ivanov, A.

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

Kandidov, V. P.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Kar, A. K.

K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
[CrossRef]

Ko, Tony H.

Kobayashi, T.

A. Baltuska and T. Kobayashi, “Adaptive shaping of two-cycle visible pulses using a flexible mirror,” App. Phys. B 75, 427–443 (2002).
[CrossRef]

T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
[CrossRef] [PubMed]

T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime”, App. Phys. B 70, S239–S246 (2000).
[CrossRef]

Kosareva, O. G.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Lamb, R. A.

K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
[CrossRef]

Lifsitz, J. R.

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Liu, W.

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Lupinski, D.

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

Ma, J.

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

Manassah, J. T.

Mathur, D.

Misewich, J.

Nikogosyan, D. N.

V. G. Dimitriev, G. G. Gurzaddyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals, 2nd revised ed. (Springer, Berlin, 1977).

Ohtani, H.

T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
[CrossRef] [PubMed]

Popov, S. V.

Rajgara, F. A.

Reddy, N. C. S.

Rolland, C.

P. B. Corkum, C. Rolland, and T. Srinivasan Rao, “Supercontinuum generation in gases,” Phys. Rev. Lett. 57, 2268–2271 (1986).
[CrossRef] [PubMed]

Saito, T.

T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
[CrossRef] [PubMed]

Salin, F.

Sandhu, A. S.

Shank, C. V.

Shapiro, S. L.

R. R. Alfano and S. L. Shapiro, “Observation of self-phase modulation and small-scale filaments in crystals and glasses,” Phys. Rev. Lett. 24, 592–594 (1970).
[CrossRef]

Shen, Y. R.

Shirakawa, A.

T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime”, App. Phys. B 70, S239–S246 (2000).
[CrossRef]

Somekh, M.

Sorokin, P. P.

Srinivasan Rao, T.

P. B. Corkum, C. Rolland, and T. Srinivasan Rao, “Supercontinuum generation in gases,” Phys. Rev. Lett. 57, 2268–2271 (1986).
[CrossRef] [PubMed]

Taylor, J. R.

Tomlinson, W. J.

Townes, C. H.

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Villate, D.

Watanabe, W.

W. Watanabe and K. Itoh, “Spatial coherence of supercontinuum emitters from multiple filaments,” Jpn. J. Appl. Phys. 40, 592–595 (2001).
[CrossRef]

Wilson, K. R.

Yakovlev, V. V.

Yamakawa, K.

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

Yang, G.

Yariv, A.

A. Yariv, Quantum Electronics, John Wiley & Sons, New York, USA, 1988.

Yen, R.

App. Phys. B (2)

A. Baltuska and T. Kobayashi, “Adaptive shaping of two-cycle visible pulses using a flexible mirror,” App. Phys. B 75, 427–443 (2002).
[CrossRef]

T. Kobayashi and A. Shirakawa, “Tunable visible and near-infrared pulse generator in a 5 fs regime”, App. Phys. B 70, S239–S246 (2000).
[CrossRef]

Appl. Phys. B (2)

S. Cussat-Blanc, A. Ivanov, D. Lupinski, and E. Freysz, “KTiOPO4, KTiOAsO4, and KNbO3 crystals for mid-infrared femtosecond optical parametric amplifiers: analysis and comparison,” Appl. Phys. B 70, S247–S252 (2000).
[CrossRef]

V. P. Kandidov, O. G. Kosareva, I. S. Golubtsov, W. Liu, A. Becker, N. Akozbek, C. M. Bowden, and S. L. Chin, “Self-transformation of a powerful femtosecond laser pulse into a white-light pulse in bulk optical media (or super continuum generation),” Appl. Phys. B 77, 149–165 (2003).
[CrossRef]

Appl. Phys. Lett. (1)

K. Cook, A. K. Kar, and R. A. Lamb, “White-light supercontinuum interference of self – focused filaments in water,” Appl. Phys. Lett. 83, 3861–3863 (2003).
[CrossRef]

J. Opt. Soc. Am. B (3)

Jpn. J. Appl. Phys. (1)

W. Watanabe and K. Itoh, “Spatial coherence of supercontinuum emitters from multiple filaments,” Jpn. J. Appl. Phys. 40, 592–595 (2001).
[CrossRef]

Nature (1)

T. Kobayashi, T. Saito, and H. Ohtani, “Real-time spectroscopy of transition states in bacteriorhodopsin during retinal isomerization,” Nature 414, 531–534 (2001).
[CrossRef] [PubMed]

Opt. Commun. (1)

A. Brodeur, F. A. Ilkov, and S. L. Chin, “Beam filamentation and the white light continuum divergence,” Opt. Commun. 129, 193–198 (1996).
[CrossRef]

Opt. Express (3)

Opt. Lett. (3)

Phys. Rev. (1)

R. G. Brewer, J. R. Lifsitz, E. Garmire, R. Y. Chiao, and C. H. Townes, “Small-scale trapped filaments in intense laser beams,” Phys. Rev. 166, 326–331 (1968).
[CrossRef]

Phys. Rev. Lett. (3)

P. B. Corkum, C. Rolland, and T. Srinivasan Rao, “Supercontinuum generation in gases,” Phys. Rev. Lett. 57, 2268–2271 (1986).
[CrossRef] [PubMed]

R. R. Alfano and S. L. Shapiro, “Observation of self-phase modulation and small-scale filaments in crystals and glasses,” Phys. Rev. Lett. 24, 592–594 (1970).
[CrossRef]

A. Brodeur and S. L. Chin, “Band-gap dependence of the ultrafast white light continuum,” Phys. Rev. Lett. 80, 4406–4409 (1998).
[CrossRef]

Other (4)

R. R. Alfano, The Supercontinuum laser source, Springer-Verlag, Berlin (1989).

M. Aoyama, T. Harimoto, J. Ma, Y. Akahane, and K. Yamakawa, “Second - harmonic generation of ultra-high intensity femtosecond pulses with a KDP crystal,” Opt. Express9, 579–585 (2001), http://www.opticsexpress.org/abstract.cfm?URI=OPEX-12-11-2397
[CrossRef] [PubMed]

A. Yariv, Quantum Electronics, John Wiley & Sons, New York, USA, 1988.

V. G. Dimitriev, G. G. Gurzaddyan, and D. N. Nikogosyan, Handbook of Nonlinear Optical Crystals, 2nd revised ed. (Springer, Berlin, 1977).

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Figures (5)

Fig. 1.
Fig. 1.

The left panel shows the supercontinuum generated at the phase matching angle of KDP crystal and the right panel at an angle far away from phase matching angle. The figures are as seen on a white screen. The blue color in the left panel is due to the emission from the screen due to SHG.

Fig. 2.
Fig. 2.

Dispersion and Spectrum measured away from phase matching angle of the generated supercontinuum (after attenuating the pump beam with an IR filter).

Fig. 3.
Fig. 3.

Evolution of the SHG and SCG as we rotate the crystal towards the phase matching angle (Here 0° refers to phasematching angle and the angular variation is measured with respect to it).

Fig. 4.
Fig. 4.

Dispersion and Spectrum measured θ=-55° away from phase matching angle of the generated supercontinuum (after attenuating the pump beam with an IR filter).

Fig. 5.
Fig. 5.

Young’s double slit fringes with a slit separation of ~0.25 mm and ~80 µm slit width.

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