Complex nonlinear refractive index of DNA

Marek Samoc; Anna Samoc; James G. Grote

doi:10.1016/j.cplett.2006.09.057

Complex nonlinear refractive index of DNA

Marek Samoc^*, Anna Samoc, James G. Grote

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

Femtosecond Z-scan technique was used to determine the dispersion of the complex cubic nonlinear susceptibility (related to the nonlinear refractive index n₂ and the two-photon absorption coefficient β₂) of deoxyribonucleic acid (DNA) in the range of wavelengths from 530-1300 nm. The nonlinear refractive index of DNA varies from ≈ 2 × 10^-15 to 1 × 10^-14 cm²/W at λ = 1300-530 nm, respectively. Only a weak two-photon absorption is observed below λ = 600 nm with a nonlinear absorption coefficient β₂ of about 0.2 cm/GW at λ = 530 nm. The dispersion is approximated with a simple complex expression.

Original language	English
Pages (from-to)	132-134
Number of pages	3
Journal	Chemical Physics Letters
Volume	431
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2006.09.057
Publication status	Published - 11 Nov 2006

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10.1016/j.cplett.2006.09.057

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title = "Complex nonlinear refractive index of DNA",

abstract = "Femtosecond Z-scan technique was used to determine the dispersion of the complex cubic nonlinear susceptibility (related to the nonlinear refractive index n2 and the two-photon absorption coefficient β2) of deoxyribonucleic acid (DNA) in the range of wavelengths from 530-1300 nm. The nonlinear refractive index of DNA varies from ≈ 2 × 10-15 to 1 × 10-14 cm2/W at λ = 1300-530 nm, respectively. Only a weak two-photon absorption is observed below λ = 600 nm with a nonlinear absorption coefficient β2 of about 0.2 cm/GW at λ = 530 nm. The dispersion is approximated with a simple complex expression.",

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year = "2006",

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AU - Samoc, Marek

AU - Samoc, Anna

AU - Grote, James G.

PY - 2006/11/11

Y1 - 2006/11/11

N2 - Femtosecond Z-scan technique was used to determine the dispersion of the complex cubic nonlinear susceptibility (related to the nonlinear refractive index n2 and the two-photon absorption coefficient β2) of deoxyribonucleic acid (DNA) in the range of wavelengths from 530-1300 nm. The nonlinear refractive index of DNA varies from ≈ 2 × 10-15 to 1 × 10-14 cm2/W at λ = 1300-530 nm, respectively. Only a weak two-photon absorption is observed below λ = 600 nm with a nonlinear absorption coefficient β2 of about 0.2 cm/GW at λ = 530 nm. The dispersion is approximated with a simple complex expression.

AB - Femtosecond Z-scan technique was used to determine the dispersion of the complex cubic nonlinear susceptibility (related to the nonlinear refractive index n2 and the two-photon absorption coefficient β2) of deoxyribonucleic acid (DNA) in the range of wavelengths from 530-1300 nm. The nonlinear refractive index of DNA varies from ≈ 2 × 10-15 to 1 × 10-14 cm2/W at λ = 1300-530 nm, respectively. Only a weak two-photon absorption is observed below λ = 600 nm with a nonlinear absorption coefficient β2 of about 0.2 cm/GW at λ = 530 nm. The dispersion is approximated with a simple complex expression.

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DO - 10.1016/j.cplett.2006.09.057

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SN - 0009-2614

VL - 431

SP - 132

EP - 134

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Complex nonlinear refractive index of DNA

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