Abstract

Nanoindentation technique was employed to measure the changes in mechanical properties of a glass preform subjected to different levels of UV exposure. The results reveal that short-term exposure leads to an appreciable increase in the Young’s modulus (E), suggesting the densification of the glass, confirming the compaction–densification model. However, on prolonged exposure, E decreases, which provides what we believe to be the first direct evidence of dilation in the glass leading into the Type IIA regime. The present results rule out the hypothesis that continued exposure leads to an irreversible compaction and prove that index modulation regimes are intrinsic to the glass matrix.

© 2009 Optical Society of America

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References

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2009 (2)

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

I. Michelakaki and S. Pissadakis, Appl. Phys. A 95, 453 (2009).
[CrossRef]

2008 (1)

J. Canning, Laser Photonics Rev. 2, 275 (2008).
[CrossRef]

2003 (1)

Nguyen Hong Ky, H. G. Limberger, R. P. Salathe, F. Cochet, and L. Dong, Opt. Commun. 225, 313 (2003).
[CrossRef]

1999 (1)

1997 (1)

1995 (2)

L. Dong, J. L. Archambault, L. Reekie, P. St. J. Russel, and D. N. Payne, Appl. Opt. 34, 3436 (1995).
[CrossRef] [PubMed]

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

1985 (1)

L. J. Gibson, J. Biomech. 18, 317 (1985).
[CrossRef] [PubMed]

Archambault, J. L.

Bayon, J. F.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Bernage, P.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Canning, J.

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

J. Canning, Laser Photonics Rev. 2, 275 (2008).
[CrossRef]

Cochet, F.

Nguyen Hong Ky, H. G. Limberger, R. P. Salathe, F. Cochet, and L. Dong, Opt. Commun. 225, 313 (2003).
[CrossRef]

Devine, R. A. B.

C. Fiori and R. A. B. Devine, Proceeding of Materials Research Society Symposium (1986), pp. 187-195.

Dianov, E. M.

Dong, L.

Nguyen Hong Ky, H. G. Limberger, R. P. Salathe, F. Cochet, and L. Dong, Opt. Commun. 225, 313 (2003).
[CrossRef]

L. Dong, J. L. Archambault, L. Reekie, P. St. J. Russel, and D. N. Payne, Appl. Opt. 34, 3436 (1995).
[CrossRef] [PubMed]

Feced, R.

Fiori, C.

C. Fiori and R. A. B. Devine, Proceeding of Materials Research Society Symposium (1986), pp. 187-195.

Gibson, L. J.

L. J. Gibson, J. Biomech. 18, 317 (1985).
[CrossRef] [PubMed]

Groothoff, N.

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

Guenot, P.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Handerek, V. A.

Kalli, K.

A. Othonos and K. Kalli, in Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, 1999), pp. 9-95.

Kanellopoulos, S. E.

Koltashev, V. V.

Ky, N. H.

Ky, Nguyen Hong

Nguyen Hong Ky, H. G. Limberger, R. P. Salathe, F. Cochet, and L. Dong, Opt. Commun. 225, 313 (2003).
[CrossRef]

Lancry, M.

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

Limberger, H. G.

Michelakaki, I.

I. Michelakaki and S. Pissadakis, Appl. Phys. A 95, 453 (2009).
[CrossRef]

Niay, P.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Othonos, A.

A. Othonos and K. Kalli, in Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, 1999), pp. 9-95.

Payne, D. N.

Pissadakis, S.

I. Michelakaki and S. Pissadakis, Appl. Phys. A 95, 453 (2009).
[CrossRef]

Plotnichenko, V. G.

Poumellec, B.

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Pyrkov, Yu. N.

Raine, K. W.

Reekie, L.

Riant, I.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Russel, P. St. J.

Salathe, R. P.

Sansonetti, P.

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Appl. Opt. (2)

Appl. Phys. A (1)

I. Michelakaki and S. Pissadakis, Appl. Phys. A 95, 453 (2009).
[CrossRef]

Appl. Phys. B (1)

M. Lancry, N. Groothoff, B. Poumellec, and J. Canning, Appl. Phys. B 94, 589 (2009).
[CrossRef]

J. Biomech. (1)

L. J. Gibson, J. Biomech. 18, 317 (1985).
[CrossRef] [PubMed]

Laser Photonics Rev. (1)

J. Canning, Laser Photonics Rev. 2, 275 (2008).
[CrossRef]

Opt. Commun. (1)

Nguyen Hong Ky, H. G. Limberger, R. P. Salathe, F. Cochet, and L. Dong, Opt. Commun. 225, 313 (2003).
[CrossRef]

Opt. Lett. (1)

Opt. Mater. (1)

B. Poumellec, P. Guenot, I. Riant, P. Sansonetti, P. Niay, P. Bernage, and J. F. Bayon, Opt. Mater. 4, 441 (1995).
[CrossRef]

Other (2)

C. Fiori and R. A. B. Devine, Proceeding of Materials Research Society Symposium (1986), pp. 187-195.

A. Othonos and K. Kalli, in Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, 1999), pp. 9-95.

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Figures (3)

Fig. 1
Fig. 1

Preform sample embedded in a polymer mould and exposed to UV: (a1) pristine section, (b1) 15 min (a2) 30 min , (b2) 45 min , (a3) 60 min .

Fig. 2
Fig. 2

Load displacement curve for the section (a); the inset shows the residual impression on the specimen surface.

Fig. 3
Fig. 3

Young’s modulus and hardness of preform as a function of UV exposure time.

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