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Performance of the spectral-domain optical coherence tomography is limited by its Ascan rate, namely the frame rate of spectrometer. In this paper, 60-MHz A-scan rate is achieved by adopting a recently demonstrated parametric spectro-temporal analyzer.
Optical limiting effects can be enhanced by designing nonlinear optical materials and by exploiting various limiting mechanisms. Here, we present the enhancement of optical limiting effects by manipulating the polarization distribution of the light field.
We present a constructive proof of the fact that mode entanglement is not necessary for optical quantum enhanced metrology (QEM) but particle entanglement is. We provide a particle entanglement witness that detects all path symmetric states useful for QEM in a Mach-Zender interferometer.
An optical differentiation wavefront sensor based on measurements of wavefront slopes in two orthogonal directions obtained by far-field spatial modulation with a binary pixelated filter inducing a linear amplitude transmission is demonstrated.
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