Digital phase conjugation of second harmonic radiation emitted by nanoparticles in turbid media

PLUTO / PLUTO-2 Spatial Light Modulators
Adaptive Optics / Wavefront Control Imaging/ Image Processing Pulse Application / -Shaping
Published on:
Authors: Chia-Lung Hsieh, Ye Pu, Rachel Grange, and Demetri Psaltis
Abstract:

“We demonstrate focusing coherent light on a nanoparticle through turbid media based on digital optical phase conjugation of second harmonic generation (SHG) field from the nanoparticle. A SHG active nanoparticle inside a turbid medium was excited at the fundamental frequency and emitted SHG field as a point source. The SHG emission was scattered by the turbid medium, and the scattered field was recorded by off-axis digital holography. A phase-conjugated beam was then generated by using a phase-only spatial light modulator and sent back through the turbid medium, which formed a nearly ideal focus on the nanoparticle.”

Open Access

Publication: Optics Express
Issue/Year: Optics Express, Vol. 18, Issue 12, pp. 12283-12290 (2010)
DOI: 10.1364/OE.18.012283
Link: https://doi.org/10.1364/OE.18.012283

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