Results 61 to 70 of about 1,023,353 (233)

Noise Suppression via Gain‐Dispersion‐Managed Nonlinear Amplification in a High‐Power Er‐Fiber Laser

Laser &Photonics Reviews, EarlyView.
Gain‐dispersion‐managed nonlinear pre‐amplification simultaneously suppresses phase and intensity noise, enabling scalable high‐power fiber amplification. The system delivers 102.3 W linearly polarized pulses with 1.19 µJ energy at 85.69 MHz and compresses them to 380 fs. Near‐linear power scaling without evident saturation highlights a practical route
Mei Yang, Yuan Chen, Tingting Liu, Zhuoren Wan, Yan Dai, Suyang Xu, Zhengru Guo, Kun Huang, Ming Yan, Heping Zeng   +9 more
wiley   +1 more source

Simultaneous ToF/FMCW LiDAR Using a Dual‐Mode Light Source in a Single Architecture

Laser &Photonics Reviews, EarlyView.
A simultaneous ToF/FMCW LiDAR architecture is demonstrated using a dual‐mode light source that alternately generates optical pulses and frequency‐chirped light within a single acquisition. By combining time‐domain ToF and coherent FMCW ranging, the system achieves high‐resolution ranging and velocity sensing while extending the measurable range beyond ...
Gyeongmin Kweon, Wontae Choe, Sang Min Park, Chang‐Seok Kim, Gyeong Hun Kim, Hwidon Lee   +5 more
wiley   +1 more source

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A., Clarkson, W.A., Nilsson, J., Offerhaus, H.L., Turner, P.W., Renaud, Cyril C., Richardson, D.J., Grudinin, A.B.   +7 more
core   +1 more source

Long non‐coding RNAs at the crossroads of inflammation, cancer and angiogenesis: Molecular mechanisms and their potential as therapeutic targets

British Journal of Pharmacology, EarlyView.
Long non‐coding RNAs (lncRNAs), a broad class of non‐protein‐coding RNAs, are characterized as new regulators of gene expression at the epigenetic, transcriptional, and post‐transcriptional level. Thus, lncRNAs are involved in the regulation of physiological processes and the development of human diseases and cancer by modulating proinflammatory ...
Charlie Leboff, Pamela Calle‐Mendoza, Maria Hatziapostolou, Christos Polytarchou   +3 more
wiley   +1 more source

Characterization of nonlinear switching in a figure-of-eight fiber laser using frequency-resolved optical gating [PDF]

, 1998
The measurement technique of frequency-resolved optical gating is applied to determine the nonlinear switching characteristics of a passively modelocked figure-of-eight erbium-doped fiber laser. By completely characterizing the intensity and phase of the
Barry, Liam P., Bollond, Paul G., Dudley, John M., Leonhardt, Rainer, Harvey, John D.   +4 more
core   +2 more sources

Human Embryonic Stem Cell‐Derived Immunity‐And‐Matrix‐Regulatory Cells Attenuate Pulmonary Fibrosis via MMP1‐Mediated Collagen Degradation

Cell Proliferation, EarlyView.
Human embryonic stem cell‐derived Immunity‐and‐Matrix‐Regulatory Cells (IMRCs) effectively attenuate pulmonary fibrosis by secreting Matrix Metalloproteinase‐1 (MMP1), which directly degrades excess collagen I in the extracellular matrix. By directly degrading collagen I, IMRCs reverse ECM stiffness, suppress myofibroblast activation, and promote a ...
Zhongwen Li, Dingyun Song, Faguo Sun, Licheng Song, Bin An, Tingting Gao, Jingjing Liu, Kan Zhang, Kaidi Liu, Kaiwei Wu, Yajing Li, Yi Yang, Yaru Liu, Ruofan Su, Zai Wang, Tiemei Zhao, Huaiyong Chen, Li Xiao, Liang Peng, Liu Wang, Wei Li, Lixin Xie, Jie Hao, Huaping Dai, Jun Wu   +24 more
wiley   +1 more source

Multi-kilowatt single-mode ytterbium-doped large-core fiber laser

, 2009
We have demonstrated a highly efficient cladding-pumped ytterbium-doped fiber laser, generating >2.1 kW of continuous-wave output power at 1.1 µm with 74% slope efficiency with respect to launched pump power.
Chung, Seung-Hwan, Nilsson, Johan, Boyland, Alexander J., Sahu, Jayanta K., Payne, David N., Jeong, Yoonchan   +5 more
core   +1 more source

Repositioning Non‐Ablative Fractional Lasers ‐ Molecular and Histological Insights from a scoping review

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Near‐infrared non‐ablative fractional lasers (NAFL) are established for skin rejuvenation and scar treatment and have attracted interest for their expanding therapeutic potential. This scoping review aims to revisit and reposition NAFL within a fluence‐dependent continuum of tissue modulation, based on evidence from 27 studies of lasers ...
Guy Erlich, Uwe Paasch, Kevin Jacobsen, Merete Haedersdal, Uffe Høgh Olesen   +4 more
wiley   +1 more source

Tapered-EDF-Based Mach–Zehnder Interferometer for Dual-Wavelength Fiber Laser

IEEE Photonics Journal, 2014
An all-fiber comb filter using a tapered-erbium-doped fiber in a Mach-Zehnder interferometer structure is presented. The free spectral range, extinction ratio, bandwidth, and interference pattern of the comb filter can be shaped by controlling the taper ...
M. I. Md Ali, S. A. Ibrahim, M. H. Abu Bakar, A. S. M. Noor, S. B. Ahmad Anas, A. K. Zamzuri, M. A. Mahdi   +6 more
doaj   +1 more source

Cosmetic Dermatology in Pregnancy and Lactation: A Risk–Benefit Framework for Clinical Practice

International Journal of Dermatology, EarlyView.
Summary of the safety profile of common cosmetic dermatology interventions during pregnancy and lactation. ABSTRACT Cosmetic dermatologic products and procedures are increasingly utilized by women of reproductive age, including those who are pregnant or lactating.
Timea Kovacs, Umer Nadir, Michael Goldenberg, Thomas E. Rohrer, Deirdre Hooper, George M. Jeha, Stanislav N. Tolkachjov   +6 more
wiley   +1 more source