Abstract

Tuning of the dielectric permittivity spectra of iron-doped strontium titanate (SrTiO3:Fe) single crystals in an external optical field is investigated at room temperature by means of terahertz time-domain spectroscopy. Application of the optical field leads to an appreciable tuning of the permittivity, which reaches up to 3.8%. The observed behavior is interpreted in terms of soft-mode hardening due to the anharmonic character of its potential. We also find that the change of refractive index has a linear relationship on scale with the applied light power. These findings are attributed to the internal space charge field of photorefraction caused by the excited free carriers.

© 2013 Optical Society of America

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  1. A. Rahman, J. Mol. Struct. 1006, 59 (2011).
    [CrossRef]
  2. A. Rahman, Spectroscopy 28, 44 (2013).
  3. J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
    [CrossRef]
  4. M. Tonouchi, Nat. Photonics 1, 97 (2007).
    [CrossRef]
  5. A. G. Stepanov, J. Hebling, and J. Kuhl, Opt. Express 12, 4650 (2004).
    [CrossRef]
  6. J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
    [CrossRef]
  7. A. Rubano, L. Braun, M. Wolf, and T. Kampfrath, Appl. Phys. Lett. 101, 081103 (2012).
    [CrossRef]
  8. J. Han, F. Wan, Z. Zhu, and W. Zhang, Appl. Phys. Lett. 90, 031104 (2007).
    [CrossRef]
  9. C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
    [CrossRef]
  10. C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
    [CrossRef]
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    [CrossRef]
  12. P. Kužel and F. Kadlec, C. R. Phys. 9, 197 (2008).
    [CrossRef]
  13. V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
    [CrossRef]
  14. O. F. Schirmer, W. Berlinger, and K. A. Müller, Solid State Commun. 16, 1289 (1975).
    [CrossRef]
  15. C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
    [CrossRef]
  16. R. Waser, T. Bieger, and J. Maier, Solid State Commun. 76, 1077 (1990).
    [CrossRef]
  17. S. Brian, “Miniature terahertz time-domain spectrometry,” Ph.D. dissertation (Rensselaer Polytechnic Institute, 2008).
  18. F. S. Chen, J. Appl. Phys. 40, 3389 (1969).
    [CrossRef]
  19. R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
    [CrossRef]
  20. M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
    [CrossRef]

2013

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

A. Rahman, Spectroscopy 28, 44 (2013).

2012

A. Rubano, L. Braun, M. Wolf, and T. Kampfrath, Appl. Phys. Lett. 101, 081103 (2012).
[CrossRef]

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

2011

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

A. Rahman, J. Mol. Struct. 1006, 59 (2011).
[CrossRef]

2010

J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
[CrossRef]

2009

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

2008

P. Kužel and F. Kadlec, C. R. Phys. 9, 197 (2008).
[CrossRef]

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

2007

M. Tonouchi, Nat. Photonics 1, 97 (2007).
[CrossRef]

J. Han, F. Wan, Z. Zhu, and W. Zhang, Appl. Phys. Lett. 90, 031104 (2007).
[CrossRef]

2004

2003

R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
[CrossRef]

2000

C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
[CrossRef]

1990

R. Waser, T. Bieger, and J. Maier, Solid State Commun. 76, 1077 (1990).
[CrossRef]

1975

O. F. Schirmer, W. Berlinger, and K. A. Müller, Solid State Commun. 16, 1289 (1975).
[CrossRef]

1969

F. S. Chen, J. Appl. Phys. 40, 3389 (1969).
[CrossRef]

Ang, C.

C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
[CrossRef]

Aoki, H.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Armitage, N. P.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Ashida, M.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Berlinger, W.

O. F. Schirmer, W. Berlinger, and K. A. Müller, Solid State Commun. 16, 1289 (1975).
[CrossRef]

Bernhagen, M.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Biegalski, M. D.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Bieger, T.

R. Waser, T. Bieger, and J. Maier, Solid State Commun. 76, 1077 (1990).
[CrossRef]

Borstel, G.

R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
[CrossRef]

Braun, L.

A. Rubano, L. Braun, M. Wolf, and T. Kampfrath, Appl. Phys. Lett. 101, 081103 (2012).
[CrossRef]

Brian, S.

S. Brian, “Miniature terahertz time-domain spectrometry,” Ph.D. dissertation (Rensselaer Polytechnic Institute, 2008).

Chakhalian, J.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Chen, F. S.

F. S. Chen, J. Appl. Phys. 40, 3389 (1969).
[CrossRef]

Evarestov, R. A.

R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
[CrossRef]

Fattakhova-Rohlfing, D.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

Freeland, J. W.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Gan, C.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Gopalan, V.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Grimaldi, C.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Hagemann, H.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Haislmaier, R.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Han, J.

J. Han, F. Wan, Z. Zhu, and W. Zhang, Appl. Phys. Lett. 90, 031104 (2007).
[CrossRef]

Hebling, J.

J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
[CrossRef]

A. G. Stepanov, J. Hebling, and J. Kuhl, Opt. Express 12, 4650 (2004).
[CrossRef]

Hlinka, J.

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Hoffmann, M. C.

J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
[CrossRef]

Hwang, H. Y.

J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
[CrossRef]

Jing, Z.

C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
[CrossRef]

Kadlec, C.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Kadlec, F.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

P. Kužel and F. Kadlec, C. R. Phys. 9, 197 (2008).
[CrossRef]

Kamba, S.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Kampfrath, T.

A. Rubano, L. Braun, M. Wolf, and T. Kampfrath, Appl. Phys. Lett. 101, 081103 (2012).
[CrossRef]

Kareev, A.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Kareev, M.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Katayama, I.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Kawayama, I.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Kinjo, R.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Kotomin, E. A.

R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
[CrossRef]

Kuhl, J.

Kužel, P.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

P. Kužel and F. Kadlec, C. R. Phys. 9, 197 (2008).
[CrossRef]

Kuzmenko, A. B.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Lee, C. H.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Lei, S.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Liu, J.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Loidl, A.

C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
[CrossRef]

Lunkenheimer, P.

C. Ang, Z. Yu, Z. Jing, P. Lunkenheimer, and A. Loidl, Phys. Rev. B 61, 3922 (2000).
[CrossRef]

Maier, J.

R. Waser, T. Bieger, and J. Maier, Solid State Commun. 76, 1077 (1990).
[CrossRef]

Martí, X.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Mazin, I. I.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Moch, P.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

Müller, K. A.

O. F. Schirmer, W. Berlinger, and K. A. Müller, Solid State Commun. 16, 1289 (1975).
[CrossRef]

Müller, V.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

Nagai, M.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Nelson, K. A.

J. Hebling, M. C. Hoffmann, H. Y. Hwang, K.-L. Yeh, and K. A. Nelson, Phys. Rev. B 81, 035201 (2010).
[CrossRef]

Nemec, H.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Panaitov, G.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Piskunov, S.

R. A. Evarestov, S. Piskunov, E. A. Kotomin, and G. Borstel, Phys. Rev. B 67, 064101 (2003).
[CrossRef]

Prosandeev, S.

M. Kareev, S. Prosandeev, J. Liu, C. Gan, A. Kareev, J. W. Freeland, M. Xiao, and J. Chakhalian, Appl. Phys. Lett. 93, 061909 (2008).
[CrossRef]

Rahman, A.

A. Rahman, Spectroscopy 28, 44 (2013).

A. Rahman, J. Mol. Struct. 1006, 59 (2011).
[CrossRef]

Reyren, N.

J. L. M. van Mechelen, D. van der Marel, C. Grimaldi, A. B. Kuzmenko, N. P. Armitage, N. Reyren, H. Hagemann, and I. I. Mazin, Phys. Rev. Lett. 100, 226403 (2008).
[CrossRef]

Rubano, A.

A. Rubano, L. Braun, M. Wolf, and T. Kampfrath, Appl. Phys. Lett. 101, 081103 (2012).
[CrossRef]

Rychetsky, I.

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

Schirmer, O. F.

O. F. Schirmer, W. Berlinger, and K. A. Müller, Solid State Commun. 16, 1289 (1975).
[CrossRef]

Schlom, D. G.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

Schubert, J.

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Shimosato, H.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Skoromets, V.

C. H. Lee, V. Skoromets, M. D. Biegalski, S. Lei, R. Haislmaier, M. Bernhagen, R. Uecker, X. Xi, V. Gopalan, X. Martí, S. Kamba, P. Kužel, and D. G. Schlom, Appl. Phys. Lett. 102, 082905 (2013).
[CrossRef]

V. Skoromets, F. Kadlec, C. Kadlec, H. Němec, I. Rychetsky, G. Panaitov, V. Müller, D. Fattakhova-Rohlfing, P. Moch, and P. Kužel, Phys. Rev. B 84, 174121 (2011).
[CrossRef]

C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, J. Hlinka, J. Schubert, G. Panaitov, and P. Kužel, Phys. Rev. B 80, 174116 (2009).
[CrossRef]

Stepanov, A. G.

Takeda, J.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Tanaka, K.

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, and K. Tanaka, Phys. Rev. Lett. 108, 097401 (2012).
[CrossRef]

Tonouchi, M.

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Figures (3)

Fig. 1.
Fig. 1.

(a) Time-domain transmittance waveform of STO:Fe crystals and its time shift under an external optical field at room temperature. Red line represents the data at P=500mW; blue line represents those without an optical pump. (b) The reference waveform is also plotted.

Fig. 2.
Fig. 2.

Frequency dependence of (a) dielectric constant and (b) absorption coefficient of STO:Fe with different external optical fields at room temperature. The data points are our measured values, and the solid lines are the fits by using Eq. (1).

Fig. 3.
Fig. 3.

Light power dependence of variation of refractive index at (a) 0.2 THz, (b) 0.3 THz, (c) 0.4 THz, and (d) 0.5 THz for STO:Fe samples. Symbols represent measured values, dash dot lines are the fits by using the classical harmonic oscillator model, and solid lines are the fits by using Eq. (2).

Equations (2)

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ε(ω,I)=fω02(I)ω2iωΓ+ε.
Δn=12(no3γ13ne3γ33)EI,

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