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308篇 您的检索式:作者名="Heidt"
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1Coherent supercontinuum generation in soft glass photonic crystal fibers显示文摘An overview of the progress on pulse-preserving, coherent, nonlinear fiber-based supercontinuum generation is presented. The context encompasses various wavelength ranges and pump sources, starting with silica photonic crystal fibers pumped with 1.0 μm femtosecond lasers up to chalcogenide step-index and microstructured fibers pumped from optical parametric amplifiers tuned to mid-infrared wavelengths. In particular, silica and silicatebased all-normal dispersion(ANDi) photonic crystal fibers have been demonstrated for pumping with femtosecond lasers operating at 1.56 μm with the recorded spectra covering 0.9–2.3 μm. This matches amplification bands of robust fiber amplifiers and femtosecond lasers. The review therefore focuses specifically on this wavelength range, discussing glass and nonlinear fiber designs, experimental results on supercontinuum generation up to the fundamental limit of oxide glass fiber transmission around 2.8 μm, and various limitations of supercontinuum bandwidth and coherence. Specifically, the role of nonlinear response against the role of dispersion profile shape is analyzed for two different soft glass ANDi fibers pumped at more than 2.0 μm. A spatio-temporal interaction of the fundamental fiber mode with modes propagating in the photonic lattice of the discussed ANDi fibers is shown to have positive effects on the coherence of the supercontinuum at pump pulse durations of 400 fs. Finally, the design and development of graded-index, nanostructured core optical fibers are discussed.In such structures the arbitrary shaping of the core refractive index profile could significantly improve the engineering flexibility of dispersion and effective mode area characteristics, and would be an interesting platform to further study the intermodal interaction mechanisms and their impact on supercontinuum coherence for subpicosecond laser pumped setups.MARIUSZ KLIMCZAK BARTLOMIEJ SIWICKI ALEXANDER HEIDT RYSZARD BUCZYNSKI 2017Photonics Research2017,5,6:3
2Identification of pancreatic cancer stem cells显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
3Real heat recovery with air handling units显示文摘Roulet C A Heidt F D Foradini F 2001Energy and Buildings2001,33,4:1
4Identification of pancreatic cancer stem cells显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
5Identification of pancreatic cancer stem cells显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
6Oncogenic function of ATDC in pancreatic cancer through Wnt pathway activation and beta- catenin stabilization 显示文摘Wang L Heidt DG Lee CJ 2009Cancer Cell2009,15,3:1
7Identification of pancreatic stem cells显示文摘Li C Heidt DG Dalerba P et at 2007Cancer Res2007,67,3:1
8Oncogenic function of ATDC in pancreatic cancer through Wnt pathway activation and beta - catenin stabilization显示文摘Wang L Heidt DG Lee CJ 2009Cancer Cell2009,15,3:1
9Human infective endocarditis caused by Streptococcus suis serotype 2显示文摘 Mohamed W Hain T 2005J Clin Microbiol2005,43,9:1
10Identification of Pancreatic Cancer Stem Cells 显示文摘Chenwei Li David G Heidt 2007Cancer Res2007,67,3:1
11Identification of pancreatic, adeno- carcinoma stern cells显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
12Identification of pancreatic cancer stem ceils显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
13Identification of pancreatic cancer stem cells显示文摘Li C Heidt DG Dalerba P 2007Cancer Res2007,67,3:1
14Influence of pH upon photolysis of uranyl oxalate actinometer system显示文摘Heidt L J Tregay G W Middleto F 1970J Phys Chem1970,74,9:1
15Identification of pancreatic cancer stem cells显示文摘LI C HEIDT DG DALERBA P 2007Cancer Res2007,67,3:1
16Identification of pancreatic cancer stem cells显示文摘Heidt DG Li C Mollenberg N 2006Surg Res2006,130,2:1
17Identification of pancreatic cancer stem cells显示文摘Li C Heidt D G Dalerba P 2007Cancer Res2007,67,:1
18Identification of pan creaticcancer stem cells显示文摘LI C HEIDT D G DALERBA P 2007Cancer Res2007,67,10:1
19Cancer stem cells:a new paradigm for understanding tumor progression and therapeutic resistance显示文摘Huang EH Heidt DG Li CW 2007Surgery2007,141,4:1
20Peripheral blood sampling for the detection of allograft rejection:biomarker identification and validation显示文摘Heidt S San Segundo D Shankar S 2011Transplan-tation2011,92,1:1
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