Journal
OPTICS EXPRESS
Volume 18, Issue 12, Pages 12283-12290Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.012283
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- National Center of Competence in Research (NCCR)
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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. (C) 2010 Optical Society of America
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