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Second harmonic generation (SHG) microscopy is expected to be a powerful tool for observing the cellular‐level functionality and morphology information of thick tissue owe to its unique imaging properties. However, the maximum attainable resolution obtainable by SHG microscopy is limited by the use of long‐wavelength, near‐infrared excitation. In this paper, we report the use of pixel reassignment...
Second harmonic generation (SHG) polarization intensity distribution illuminated with radially polarized beams by lens focusing appears two peaks, when the nonlinear optical coefficients dominate that is relevant to the transverse electric field components. Such two peaks pattern may result in ghosting and the decrement of imaging resolution. In this paper, an elliptical mirror based system is proposed...
Electro-optical composites based on the product of electro-strictive and elasto-optical effects were developed. Laminate composites of PbZr1-xTixO3 and Polycarbonate were synthesized. Their electro-optical properties were studied. The nominal transverse electro-optical coefficient of the composites was observed 3 times larger than the similar quantity of NbLiO3. Experiments and theoretical analysis...
We study theoretically the second harmonic generation in a nonlinear quadratic crystal with random distribution of ferroelectric domains. We show that the specific features of disordered domain structure greatly affect the emission pattern of the generated harmonics. This phenomenon can be used to characterize the degree of disorder in nonlinear photonic structures.
We study parametric frequency conversion in quadratic nonlinear media with disordered ferroelectric domains. We demonstrate that disorder allows realizing broadband second- and third-harmonic generation via cascading of two second-order quasi-phase matched nonlinear processes. Application to short-pulse measurements is demonstrated.
We discuss monolithic integration of a 100-channel AWG with a 10-GHz channel spacing with 100 Michelson-interferometer-based phase- and amplitude-modulators. The AWG showed approximately 10 dB crosstalk, and the twin-integrated devices comprise a 2?? InP wafer.
A monolithic integrated three-section amplified feedback semiconductor laser (AFL) is demonstrated as an all optical clock regenerator. All optical clock recovery for 40Gb/s is demonstrated experimentally using AFL.
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