نتایج جستجو برای: optical saturable absorption
تعداد نتایج: 384947 فیلتر نتایج به سال:
The permeability of glycerol, a small hydrophilic solute, across the intestinal membrane would be low, if passive diffusion restricted to the paracellular route is the principal transport mechanism as generally assumed for this class of solutes. However, in the present study using a closed loop of rat small intestine in situ, we found that the absorption of glycerol was faster than that of urea...
We present self-accelerating self-trapped beams in nonlinear optical media, exhibiting self-focusing and self-defocusing Kerr and saturable nonlinearities, as well as a quadratic response. In Kerr and saturable media such beams are stable under self-defocusing and weak self-focusing, whereas for strong self-focusing the beams off-shoot solitons while their main lobe continues to accelerate. Sel...
Enhanced self-phase modulation in silicon nitride waveguides integrated with 2D graphene oxide films
We experimentally demonstrate enhanced self-phase modulation (SPM) in silicon nitride (Si3N4) waveguides integrated with 2D graphene oxide (GO) films. GO films are onto Si3N4 using a solution-based, transfer-free coating method that enables precise control of the film thickness. Detailed SPM measurements carried out both picosecond and femtosecond optical pulses. Owing to high Kerr nonlinearity...
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