Stimulated Mie scattering in nanocrystals suspension

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 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 languageEnglish
Article number011110
JournalApplied Physics Letters
Volume101
Issue number1
DOIs
Publication statusPublished - 2 Jul 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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