Stimulated Mie scattering in nanocrystals suspension

Guang S. He; Wing Cheung Law; Liwei Liu; Xihe Zhang; Paras N. Prasad

doi:10.1063/1.4730408

Stimulated Mie scattering in nanocrystals suspension

Guang S. He, Wing Cheung Law, Liwei Liu, Xihe Zhang, Paras N. Prasad

Research output: Journal article publication › Journal article › Academic research › peer-review

18 Citations (Scopus)

Abstract

In this letter, we report the observation of backward stimulated Mie scattering in a suspension of CdSe/Cds/ZnS nanocrystals in chloroform, pump by 816-nm or 1064-nm nanosecond laser pulses. The observed stimulated scattering exhibits the features of no frequency-shift, low pump threshold requirement, and easy controllability. For average nanocrystals' size of ∼5.5 nm and weight concentration of 4.5 mg/mL, the measured nonlinear reflectivity (energy conversion efficiency from pump pulse to stimulated scattering pulse) could be up to 32. This nanoparticles-based stimulated scattering effect can find special applications for self-adapted bioimaging, high-sensitivity sensors, lasing feedback elements, and optical ranging and lidar systems.

Original language	English
Article number	011110
Journal	Applied Physics Letters
Volume	101
Issue number	1
DOIs	https://doi.org/10.1063/1.4730408
Publication status	Published - 2 Jul 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4730408

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title = "Stimulated Mie scattering in nanocrystals suspension",

abstract = "In this letter, we report the observation of backward stimulated Mie scattering in a suspension of CdSe/Cds/ZnS nanocrystals in chloroform, pump by 816-nm or 1064-nm nanosecond laser pulses. The observed stimulated scattering exhibits the features of no frequency-shift, low pump threshold requirement, and easy controllability. For average nanocrystals' size of ∼5.5 nm and weight concentration of 4.5 mg/mL, the measured nonlinear reflectivity (energy conversion efficiency from pump pulse to stimulated scattering pulse) could be up to 32. This nanoparticles-based stimulated scattering effect can find special applications for self-adapted bioimaging, high-sensitivity sensors, lasing feedback elements, and optical ranging and lidar systems.",

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AU - He, Guang S.

AU - Law, Wing Cheung

AU - Liu, Liwei

AU - Zhang, Xihe

AU - Prasad, Paras N.

PY - 2012/7/2

Y1 - 2012/7/2

N2 - In this letter, we report the observation of backward stimulated Mie scattering in a suspension of CdSe/Cds/ZnS nanocrystals in chloroform, pump by 816-nm or 1064-nm nanosecond laser pulses. The observed stimulated scattering exhibits the features of no frequency-shift, low pump threshold requirement, and easy controllability. For average nanocrystals' size of ∼5.5 nm and weight concentration of 4.5 mg/mL, the measured nonlinear reflectivity (energy conversion efficiency from pump pulse to stimulated scattering pulse) could be up to 32. This nanoparticles-based stimulated scattering effect can find special applications for self-adapted bioimaging, high-sensitivity sensors, lasing feedback elements, and optical ranging and lidar systems.

AB - In this letter, we report the observation of backward stimulated Mie scattering in a suspension of CdSe/Cds/ZnS nanocrystals in chloroform, pump by 816-nm or 1064-nm nanosecond laser pulses. The observed stimulated scattering exhibits the features of no frequency-shift, low pump threshold requirement, and easy controllability. For average nanocrystals' size of ∼5.5 nm and weight concentration of 4.5 mg/mL, the measured nonlinear reflectivity (energy conversion efficiency from pump pulse to stimulated scattering pulse) could be up to 32. This nanoparticles-based stimulated scattering effect can find special applications for self-adapted bioimaging, high-sensitivity sensors, lasing feedback elements, and optical ranging and lidar systems.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Stimulated Mie scattering in nanocrystals suspension

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