Results 51 to 60 of about 64,947 (285)

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Efficient Pulsed Raman Laser with Wavelength above 2.1 μm Pumped by Noise‐Like Pulse

Advanced Photonics Research
Herein, the efficiently high‐power pulsed Raman lasers with wavelength above 2.1 μm are experimentally demonstrated relying on the stimulated Raman scattering.
Meng Wang, Deqin Ouyang, Yu Lin, Yewang Chen, Minqiu Liu, Junqing Zhao, Xing Liu, Shuangchen Ruan   +7 more
doaj   +1 more source

Ultrafast Raman laser mode-locked by nanotubes [PDF]

, 2011
We demonstrate passive mode-locking of a Raman fiber laser using a nanotube-based saturable absorber coupled to a net normal dispersion cavity. This generates highly chirped 500 ps pulses.
A. C. Ferrari, Aguergaray, Bonaccorso, C. E. S. Castellani, Chamorovskiy, Chamorovskiy, Chernikov, Chestnut, Chong, D. Popa, E. Flahaut, E. J. R. Kelleher, Fernandez, Hasan, J. C. Travers, J. R. Taylor, Kelleher, Kivistö, Kobtsev, Osswald, Renninger, Renninger, S. V. Popov, Schröder, Sun, Sun, T. Hasan, Wang, Wise, Z. Sun   +29 more
core   +3 more sources

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Watt-level sub-100 fs third near-infrared window laser generated by self-seeded coherent Raman amplification based on erbium-ytterbium co-doped fiber

High Power Laser Science and Engineering
In this paper, we prove that the third near-infrared (NIR-III) window high-power laser with wavelength in the range of 1600–1800 nm can be obtained by the coherent Raman fiber amplification technique through theoretical and experimental study.
Jiaxuan Zhang, Jintao Fan, Minglie Hu
doaj   +1 more source

A 4.8-kW high-efficiency 1050-nm monolithic fiber laser amplifier employing a pump-sharing structure

Frontiers in Physics, 2023
The power scaling of ytterbium-doped fiber (YDF) lasers emitting at the wavelength range of 1030 nm–1060 nm has been limited by amplified spontaneous emission (ASE), stimulated Raman scattering (SRS) effect, and transverse mode instability (TMI).
Xiangming Meng, Fengchang Li, Baolai Yang, Baolai Yang, Baolai Yang, Yun Ye, Junyu Chai, Xiaoming Xi, Xiaoming Xi, Xiaoming Xi, Peng Wang, Peng Wang, Peng Wang, Hanshuo Wu, Hanshuo Wu, Hanshuo Wu, Chen Shi, Chen Shi, Chen Shi, Hanwei Zhang, Hanwei Zhang, Hanwei Zhang, Xiaolin Wang, Xiaolin Wang, Xiaolin Wang, Kai Han, Kai Han   +26 more
doaj   +1 more source

Sub two-cycle soliton-effect pulse compression at 800 nm in Photonic Crystal Fibers [PDF]

, 2006
The possibility of soliton self-compression of ultrashort laser pulses down to the few-cycle regime in photonic crystal fibers is numerically investigated.
Ahmed, Baltuska, Baltuska, Bessonov, Bilinsky, Brabec, Brabec, Chan, Dudley, Ell, Foster, Gouveia-Neto, Helder M. Crespo, Jiang, Lin, Marco V. Tognetti, Mollenauer, Morgner, Nisoli, Nisoli, Ouzounov, Russell, Schenkel, Schenkel, Stolen, Tognetti, Wai, Yamane   +27 more
core   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Extreme value statistics in Raman fiber lasers [PDF]

SPIE Proceedings, 2011
We present the numerical study of the statistical properties of the partially coherent quasi-CW high-Q cavity Raman fiber laser. The statistical properties are different for the radiation generated at one or many cavity passes. It is found that rare extreme events are generated at the far spectral wings of the spectrum.
Dmitry V. Churkin, Oleg A. Gorbunov, Sergey V. Smirnov   +2 more
openaire   +2 more sources

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source