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CEP-stable, sub-6 fs, 300-kHz OPCPA system with more than 15 W of average power.
Prinz, Stephan,Haefner, Matthias,Teisset, Catherine Yuriko,Bessing, Robert,Michel, Knut,Lee, Yeon,Geng, Xiao Tao,Kim, Seungchul,Kim, Dong Eon,Metzger, Thomas,Schultze, Marcel Optical Society of America 2015 Optics express Vol.23 No.2
<P>We report on a CEP-stable OPCPA system reaching multi-GW peak powers at 300 kHz repetition rate. It delivers 15 W of average power, over 50 ?J of compressed pulse energy and a pulse duration below 6 fs. By implementing an additional pump-seed-synchronization, the output parameters are stabilized over hours with power fluctuations of less than 1.5%.</P>
( Philip Prinz ),( Andreas Stengel ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.2
This review focuses on the control of appetite by food intake-regulatory peptides secreted from the gastrointestinal tract, namely cholecystokinin, glucagon-like peptide 1, peptide YY, ghrelin, and the recently discovered nesfatin-1 via the gut-brain axis. Additionally, we describe the impact of external factors such as intake of different nutrients or stress on the secretion of gastrointestinal peptides. Finally, we highlight possible conservative--physical activity and pharmacotherapy--treatment strategies for obesity as well as surgical techniques such as deep brain stimulation and bariatric surgery also altering these peptidergic pathways. (J Neurogastroenterol Motil 2017;23:180-196)