Abstract

By using femtosecond pulses from traveling-wave parametric generation we have accurately measured the absolute value and the frequency dispersion of the two-photon absorption coefficient of semiconductor nanocrystals embedded in a glass matrix. Comparison is made with bulk semiconductors.

© 1996 Optical Society of America

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References

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  1. C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).
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1995

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

1994

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

1993

1992

D. Cotter, M. G. Burt, R. J. Manning, Phys. Rev. Lett. 68, 1200 (1992).
[CrossRef] [PubMed]

H. Ma, A. S. L. Gomes, C. B. de Araujo, Opt. Commun. 87, 19 (1992).
[CrossRef]

1991

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

1989

1985

Banfi, G. P.

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

G. P. Banfi, V. Degiorgio, B. Speit, J. Appl. Phys. 74, 6925 (1993).
[CrossRef]

R. Danielius, A. Piskarskas, A. Stabinis, G. P. Banfi, P. Di Trapani, R. Righini, J. Opt. Soc. Am. B 10, 2222 (1993).
[CrossRef]

Banyai, W. C.

Bindra, K. S.

Burt, M. G.

D. Cotter, M. G. Burt, R. J. Manning, Phys. Rev. Lett. 68, 1200 (1992).
[CrossRef] [PubMed]

Chari, R.

Cotter, D.

D. Cotter, M. G. Burt, R. J. Manning, Phys. Rev. Lett. 68, 1200 (1992).
[CrossRef] [PubMed]

Cullen, T. G.

Danielius, R.

de Araujo, C. B.

H. Ma, A. S. L. Gomes, C. B. de Araujo, Opt. Commun. 87, 19 (1992).
[CrossRef]

Degiorgio, V.

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

G. P. Banfi, V. Degiorgio, B. Speit, J. Appl. Phys. 74, 6925 (1993).
[CrossRef]

Di Trapani, P.

Finlayson, N.

Flytzanis, C.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

Fortusini, D.

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

Ghigliazza, M.

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

Gomes, A. S. L.

H. Ma, A. S. L. Gomes, C. B. de Araujo, Opt. Commun. 87, 19 (1992).
[CrossRef]

Hache, F.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

Ironside, C. N.

Klein, M. C.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

Ma, H.

H. Ma, A. S. L. Gomes, C. B. de Araujo, Opt. Commun. 87, 19 (1992).
[CrossRef]

Manning, R. J.

D. Cotter, M. G. Burt, R. J. Manning, Phys. Rev. Lett. 68, 1200 (1992).
[CrossRef] [PubMed]

Oak, S. M.

O'Neill, M.

Piskarskas, A.

Ricard, D.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

Righini, R.

Roussignol, P.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

Rustagi, K. C.

Seaton, C. T.

Soileau, M. J.

Speit, B.

G. P. Banfi, V. Degiorgio, B. Speit, J. Appl. Phys. 74, 6925 (1993).
[CrossRef]

Stabinis, A.

Stegeman, G. L.

Tan, H.

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

Tan, H. M.

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

Tomaselli, A.

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

Van Stryland, E. W.

Vanherzele, H.

Woodhall, M. A.

Appl. Phys. Lett.

G. P. Banfi, V. Degiorgio, D. Fortusini, H. M. Tan, Appl. Phys. Lett. 67, 13 (1995).
[CrossRef]

J. Appl. Phys.

G. P. Banfi, V. Degiorgio, B. Speit, J. Appl. Phys. 74, 6925 (1993).
[CrossRef]

J. Opt. Soc. Am. B

Opt. Commun.

H. Ma, A. S. L. Gomes, C. B. de Araujo, Opt. Commun. 87, 19 (1992).
[CrossRef]

Opt. Lett.

Phys. Rev. B

G. P. Banfi, V. Degiorgio, M. Ghigliazza, H. Tan, A. Tomaselli, Phys. Rev. B 50, 5699 (1994).
[CrossRef]

Phys. Rev. Lett.

D. Cotter, M. G. Burt, R. J. Manning, Phys. Rev. Lett. 68, 1200 (1992).
[CrossRef] [PubMed]

Prog. Opt.

C. Flytzanis, F. Hache, M. C. Klein, D. Ricard, P. Roussignol, Prog. Opt. 29, 323 (1991).

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Figures (3)

Fig. 1
Fig. 1

Transmission T versus pulse energy at 1.2 μm. The SDG samples are 3 mm thick. For the reference crystals, (βL)eq = 4.78 × 10−2 and 6.25 × 10−4 cm2/GW for the 0.5-mm-thick BBO and the 0.38-mm-thick KDP, respectively. To show the sensitivity and the accuracy of the experiment, we also present in the upper curve the data obtained with the KDP crystal detuned from second-harmonic phase matching when a constant T = 1 is expected (open squares).

Fig. 2
Fig. 2

Im χ n ( 3 ) versus the crystal radius for the experimental glasses of the R and V series. At the right-hand side Im χ b ( 3 ) is shown. Measurements were performed at various wavelengths: CdTe nanocrystals (R series) and CdTe bulk at (●) 1.2 μm, (□) 1.4 μm, (◆) and 1.58 μm; (+) CdS0.9Se0.1 nanocrystals (V series); and (×) bulk CdS at 0.79 mm.

Fig. 3
Fig. 3

Plot of the scaled quantity (ω/ω0)4 Im χ(3) of nanocrystals and of bulk semiconductors versus Eg/(ħω), with the wavelengths of the measurements given in the figure. The solid curve represents the prediction for bulk semiconductors.

Equations (1)

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Im χ b ( 3 ) = D ( 1 / ω 4 ) ( 2 ω / E g 1 ) 3 / 2 ( 2 ω / E g ) 2 ,

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