نتایج جستجو برای: optical saturable absorption

تعداد نتایج: 384947  

Journal: :Biological & pharmaceutical bulletin 2003
Hiroaki Yuasa Kaori Hamamoto Shin-ya Dogu Takeshi Marutani Aki Nakajima Toyonori Kato Yayoi Hayashi Katsuhisa Inoue Jun Watanabe

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...

Journal: :Physical review letters 2011
Ido Kaminer Mordechai Segev Demetrios N Christodoulides

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...

Journal: :IEEE Journal of Selected Topics in Quantum Electronics 2022

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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