Abstract
We have generated a phase-conjugate (PC) wave from nanoparticles with a new microscopic system proposed. The microscope includes a confocal system with a degenerate four-wave mixing (DFWM) system, which plays a major role in generating the phase-conjugate wave to compensate phase distortion in the optical path toward targets. The proposed optical system detects feeble PC wave and imagines 3D particles while improving the inplane contrast resolution of the microscopic image.
Highlights
Organic days have attracted extensive attention in optical memory, optical communications, optical information processing, OPC, holographic recording, third harmonic generation (THG), stimulated scattering, and so on [1–8]
The degenerate four-wave mixing (DFWM) system was proposed by Hellwarth as a method to generate the PC wave. is “degenerate” means that all four-wave frequencies are equal. e DFWM system can be measured in all media with no phase shift
We evaluated the characteristics of the phase-conjugate wave for the microscopic optical system and performed 3D measurement using organic dye-doped nanoparticles
Summary
Organic days have attracted extensive attention in optical memory, optical communications, optical information processing, OPC, holographic recording, third harmonic generation (THG), stimulated scattering, and so on [1–8]. We evaluated the characteristics of the phase-conjugate wave for the microscopic optical system and performed 3D measurement using organic dye-doped nanoparticles. We used nanoparticles doped with PE dyes as a nonlinear optical material for PC wave generation. Erefore, in the DFWM system, if two pump beams are incident opposite to each other, the phase matching condition is automatically satisfied and the PC wave is generated. E confocal signal is generated from the area within the focal depth of the objective, which determines the corresponding effective wave-mixing interaction length for PC generation in the confocal DFWM system proposed. Since all materials have third-order nonlinear susceptibility causing the effect, the phase-conjugate wave generation is possible in all media. The PE dye functions as the PC wave generator due to its own saturable absorption properties
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