Electronic self-defocusing of nanosecond laser pulses in bulk ZnSe

J. R. Milward; W. Ji; A. K. Kar; C. R. Pidgeon; B. S. Wherrett

doi:10.1063/1.347593

Electronic self-defocusing of nanosecond laser pulses in bulk ZnSe

J. R. Milward, W. Ji, A. K. Kar, C. R. Pidgeon, B. S. Wherrett

School of Engineering & Physical Sciences

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

7 Citations (Scopus)

Abstract

A large refractive nonlinearity (-2×10^-20 cm³) has been observed in polycrystalline ZnSe across a range of wavelengths just below the band edge, using nanosecond laser pulses. The transmitted spatial profiles are measured, and theoretical fits give the spectral response of the nonlinear refractive cross section at low irradiances. A comparison with band filling theory indicates that the dynamic Burstein-Moss shift is the dominant mechanism responsible for this refractive nonlinearity.

Original language	English
Pages (from-to)	7351-7353
Number of pages	3
Journal	Journal of Applied Physics
Volume	69
Issue number	10
DOIs	https://doi.org/10.1063/1.347593
Publication status	Published - 1991

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abstract = "A large refractive nonlinearity (-2×10-20 cm3) has been observed in polycrystalline ZnSe across a range of wavelengths just below the band edge, using nanosecond laser pulses. The transmitted spatial profiles are measured, and theoretical fits give the spectral response of the nonlinear refractive cross section at low irradiances. A comparison with band filling theory indicates that the dynamic Burstein-Moss shift is the dominant mechanism responsible for this refractive nonlinearity.",

author = "Milward, {J. R.} and W. Ji and Kar, {A. K.} and Pidgeon, {C. R.} and Wherrett, {B. S.}",

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AU - Kar, A. K.

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AU - Wherrett, B. S.

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AB - A large refractive nonlinearity (-2×10-20 cm3) has been observed in polycrystalline ZnSe across a range of wavelengths just below the band edge, using nanosecond laser pulses. The transmitted spatial profiles are measured, and theoretical fits give the spectral response of the nonlinear refractive cross section at low irradiances. A comparison with band filling theory indicates that the dynamic Burstein-Moss shift is the dominant mechanism responsible for this refractive nonlinearity.

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JO - Journal of Applied Physics

JF - Journal of Applied Physics

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Electronic self-defocusing of nanosecond laser pulses in bulk ZnSe

Abstract

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