Abstract

In this work we show that is possible to produce stable color centers in YLiF4 crystals, with dimensional control, by focusing high-intensity ultrashort laser pulses in the bulk. In particular, with the spectroscopic characterization of ultrashort laser-irradiated YLF samples, it was possible to discuss the basic formation mechanisms of these centers.

© 2005 Optical Society of America

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  1. A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
    [CrossRef]
  2. Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
    [CrossRef]
  3. A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
    [CrossRef]
  4. G. Baldacchini and R. M. Montereali, "New perspectives of colored LiF for optoelectronic devices," Opt. Mater. 16, 53-61 (2001).
    [CrossRef]
  5. L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
    [CrossRef] [PubMed]
  6. S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
    [CrossRef]
  7. A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
    [CrossRef]
  8. T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.
  9. T. T. Basiev, F. A. Vakhidov, and S. B. Mirov, "Radiational transformations in a new LiYF4 laser crystal with color centers," Kratk. Soobshch. Fiz. 7, 3-5 (1988).
  10. L. C. Courrol, L. Gomes, and I. M. Ranieri, "Microscopic identification of the F2+-O2− center formation in LiF:OH-," Phys. Rev. B 42, 4741-4743 (1990).
    [CrossRef]
  11. J. H. Schulman and W. D. Compton, Color Centers in Solids (Pergamon, 1963).
  12. L. Gomes and S. P. Morato, "Resonant OH- photodissociation in alkali halide crystals," Phys. Rev. B 55, 8743-8754 (1997).
    [CrossRef]
  13. D. R. Hall and P. E. Jackson, The Physics and Technology of Laser Resonators (IOP, 1989), Chap. 1.
  14. N. Bloembergen, "Laser-induced electric breakdown in solids," IEEE J. Quantum Electron. 10, 375-386 (1974).
    [CrossRef]
  15. D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
    [CrossRef]
  16. A. Brodeur and S. L. Chin, "Band-gap dependence of the ultrafast white-light continuum," Phys. Rev. Lett. 80, 4406-4409 (1998).
    [CrossRef]

2005 (1)

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

2004 (2)

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

2002 (2)

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

2001 (2)

G. Baldacchini and R. M. Montereali, "New perspectives of colored LiF for optoelectronic devices," Opt. Mater. 16, 53-61 (2001).
[CrossRef]

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

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)

L. Gomes and S. P. Morato, "Resonant OH- photodissociation in alkali halide crystals," Phys. Rev. B 55, 8743-8754 (1997).
[CrossRef]

1994 (1)

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

1990 (1)

L. C. Courrol, L. Gomes, and I. M. Ranieri, "Microscopic identification of the F2+-O2− center formation in LiF:OH-," Phys. Rev. B 42, 4741-4743 (1990).
[CrossRef]

1988 (1)

T. T. Basiev, F. A. Vakhidov, and S. B. Mirov, "Radiational transformations in a new LiYF4 laser crystal with color centers," Kratk. Soobshch. Fiz. 7, 3-5 (1988).

1974 (1)

N. Bloembergen, "Laser-induced electric breakdown in solids," IEEE J. Quantum Electron. 10, 375-386 (1974).
[CrossRef]

Baldacchini, G.

G. Baldacchini and R. M. Montereali, "New perspectives of colored LiF for optoelectronic devices," Opt. Mater. 16, 53-61 (2001).
[CrossRef]

Baldochi, S. L.

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

Basiev, T. T.

T. T. Basiev, F. A. Vakhidov, and S. B. Mirov, "Radiational transformations in a new LiYF4 laser crystal with color centers," Kratk. Soobshch. Fiz. 7, 3-5 (1988).

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Bensalah, A.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Bloembergen, N.

N. Bloembergen, "Laser-induced electric breakdown in solids," IEEE J. Quantum Electron. 10, 375-386 (1974).
[CrossRef]

Bonacic-Koutecky, V.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Boulon, G.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

Brodeur, A.

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

Budzyn, F.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Chin, S. L.

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

Compton, W. D.

J. H. Schulman and W. D. Compton, Color Centers in Solids (Pergamon, 1963).

Courrol, L. C.

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

L. C. Courrol, L. Gomes, and I. M. Ranieri, "Microscopic identification of the F2+-O2− center formation in LiF:OH-," Phys. Rev. B 42, 4741-4743 (1990).
[CrossRef]

de Freitas, A. Z.

Du, D.

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

Espírito, A. M.

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

Fukuda, T.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Gomes, L.

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

L. Gomes and S. P. Morato, "Resonant OH- photodissociation in alkali halide crystals," Phys. Rev. B 55, 8743-8754 (1997).
[CrossRef]

L. C. Courrol, L. Gomes, and I. M. Ranieri, "Microscopic identification of the F2+-O2− center formation in LiF:OH-," Phys. Rev. B 42, 4741-4743 (1990).
[CrossRef]

Hall, D. R.

D. R. Hall and P. E. Jackson, The Physics and Technology of Laser Resonators (IOP, 1989), Chap. 1.

Hartmann, M.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Ito, K.

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Jackson, P. E.

D. R. Hall and P. E. Jackson, The Physics and Technology of Laser Resonators (IOP, 1989), Chap. 1.

Jiang, Z.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Korn, G.

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

Li, S.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Li, Y.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Liu, X.

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

Liu, Z.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Lupulescu, C.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Merli, A.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Mirov, S. B.

T. T. Basiev, F. A. Vakhidov, and S. B. Mirov, "Radiational transformations in a new LiYF4 laser crystal with color centers," Kratk. Soobshch. Fiz. 7, 3-5 (1988).

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Montereali, R. M.

G. Baldacchini and R. M. Montereali, "New perspectives of colored LiF for optoelectronic devices," Opt. Mater. 16, 53-61 (2001).
[CrossRef]

Morato, S. P.

L. Gomes and S. P. Morato, "Resonant OH- photodissociation in alkali halide crystals," Phys. Rev. B 55, 8743-8754 (1997).
[CrossRef]

Mourou, G.

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

Nikl, M.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

Orlovskii, Yu. V.

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Osiko, V. V.

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Pittner, J.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Prokhorov, A. M.

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Ranieri, I. M.

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

L. C. Courrol, L. Gomes, and I. M. Ranieri, "Microscopic identification of the F2+-O2− center formation in LiF:OH-," Phys. Rev. B 42, 4741-4743 (1990).
[CrossRef]

Samad, R. E.

Sato, H.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Satonaga, T.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

Schulman, J. H.

J. H. Schulman and W. D. Compton, Color Centers in Solids (Pergamon, 1963).

Shimamura, K.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Squier, J.

D. Du, X. Liu, G. Korn, J. Squier, and G. Mourou, "Laser-induced breakdown by impact ionization in SiO2 with pulsewidths from 7 nsto150 fs," Appl. Phys. Lett. 64, 3071-3073 (1994).
[CrossRef]

Sudesh, V.

A. Bensalah, K. Shimamura, V. Sudesh, H. Sato, K. Ito, and T. Fukuda, "Growth of Tm, Ho-codoped YLiF4 and LuLiF4 single crystals for eye-safe lasers," J. Cryst. Growth 223, 539-544 (2001).
[CrossRef]

Vajda, S.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Vakhidov, F. A.

T. T. Basiev, F. A. Vakhidov, and S. B. Mirov, "Radiational transformations in a new LiYF4 laser crystal with color centers," Kratk. Soobshch. Fiz. 7, 3-5 (1988).

T. T. Basiev, F. A. Vakhidov, S. B. Mirov, Yu. V. Orlovskii, V. V. Osiko, and A. M. Prokhorov, "Spontaneous and induced radiation, photo- and thermochromism in a new LiYF4 color center laser crystals," in XV International Conference on Quantum Electronics, Vol. 21 of OSA Technical Digest Series (Optical Society of America, 1987), p. 194.

Vedda, A.

A. Bensalah, M. Nikl, A. Vedda, K. Shimamura, T. Satonaga, H. Sato, T. Fukuda, and G. Boulon, "X-ray induced color centres in pure and doped LiYF4 and LiLuF4 single crystals," Radiat. Eff. Defects Solids 157, 563-567 (2002).
[CrossRef]

Vieira, N. D.

L. C. Courrol, R. E. Samad, L. Gomes, I. M. Ranieri, S. L. Baldochi, A. Z. de Freitas, and N. D. Vieira, Jr., "Color center production by femtosecond pulse laser irradiation in LiF crystals," Opt. Express 12, 288-293 (2004).
[CrossRef] [PubMed]

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

Wang, Q.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

Wetter, N. U.

A. M. Espírito, L. C. Courrol, I. M. Ranieri, N. U. Wetter, N. D. Vieira, Jr., and S. L. Baldochi, "Optical properties of lithium fluoride fibers grown by micro-pulling-down method," Opt. Mater. 27, 487-490 (2004).
[CrossRef]

Worste, L.

S. Vajda, C. Lupulescu, A. Merli, F. Budzyn, L. Worste, M. Hartmann, J. Pittner, and V. Bonacic-Koutecky, "Observation and theoretical description of the periodic geometric rearrangement in electronically excited non-stochiometric sodium-fluoride clusters," Phys. Rev. Lett. 89, 213404 (2002).
[CrossRef]

Zhang, S.

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[CrossRef]

Zhang, X.

Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
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Y. Li, Q. Wang, S. Zhang, X. Zhang, Z. Liu, Z. Jiang, Z. Liu, and S. Li, "A novel La3Ga5SiO14 electro-optic Q-switched Nd:LiYF (Nd:YLF) laser with a Cassegrain unstable cavity," Opt. Commun. 244, 333-338 (2005).
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

Infrared absorption spectra of YLF zf and YLF:O crystals. The thin peak observed in the YLF:O spectra around 3600 nm corresponds to OH stretching.

Fig. 2
Fig. 2

Production of color centers with an ultrashort laser pulse. Irradiation 1 samples (a) were dislocated 3 mm over 3 min radiation, and three traces were produced. Each trace was separated by 1 mm . Irradiation 2 samples (b) were irradiated for 1 min along the crystals.

Fig. 3
Fig. 3

Absorption spectra of color centers created in YLF crystals by 640 μ J , 60 fs laser pulses. In both graphics, the curves with circles are the spectra of the samples kept in liquid nitrogen, and the continuous curves are the spectra after three days at room temperature. (a) Results for the pure YLF sample; (b) results for the YLF:O doped sample.

Fig. 4
Fig. 4

Absorption spectra of YLF and YLF:O samples (a) after ultrashort laser pulses irradiation and (b) after electron irradiation.

Fig. 5
Fig. 5

Photographs of the YLF:O crystals irradiated with ultrashort laser pulses. It is possible to see a very thin trace in crystals, indicated by the arrows, corresponding to the laser interaction area. The colors of these traces are the same color of the electron irradiated crystals. (1) Traces produced by irradiation 1 and (2) track in frontal and lateral views in irradiation 2; the filaments have diameters on the order of 20 μ m .

Equations (1)

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w = w 0 { 1 + [ M 2 λ ( z z 0 ) π w 0 2 ] 2 } 1 2 ,

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