Results 51 to 60 of about 34,043 (308)

20 kW Monolithic Fiber Amplifier With Directly Dual-Wavelength Laser Diodes Counter Pumping

IEEE Photonics Journal
In this study, we demonstrate a high-power ytterbium-doped fiber laser (YDFL) based on laser diodes (LDs) directly pumping scheme. Tandem pumping and LD direct pumping are two common schemes for generating high-brightness laser output in YDFL.
Xiangming Meng, Fengchang Li, Jinbao Chen, Xiaoming Xi, Baolai Yang, Peng Wang, Zhiyong Pan, Zhiping Yan, Hanwei Zhang, Xiaolin Wang, Zefeng Wang   +10 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

Optical Control of Superlattices States Formed Due to Electronic Phase Separation in Multiferroic Eu_0.8Ce_0.2Mn₂O₅

Nanomaterials, 2021
The effect of optical pumping and magnetic field on properties of the electronic phase separation regions, which are the multiferroic semiconductor heterostructures in the form of superlattices, have been studied in Eu0.8Ce0.2Mn2O5.
Viktoriya Sanina, Boris Khannanov, Evgenii Golovenchits   +2 more
doaj   +1 more source

Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]

, 2007
On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew, Pedersen, T., Kosch, Mike J., Bristow, B., Mishin, E., Watkins, B., Hughes, J., Oyama, S.   +7 more
core  

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Proposal for Deep-UV Emission from a Near-Infrared AlN/GaN-Based Quantum Cascade Device Using Multiple Photon Up-Conversion

Crystals, 2023
We propose the use of an n-doped periodic AlN/GaN quantum cascade structure for the optical up-conversion of multiple near-infrared (near-IR) photons into deep-ultraviolet (deep-UV) radiation.
Daniel Hofstetter, David P. Bour, Hans Beck   +2 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Perovskite lasers: From optical pumping to electrical pumping

FlexMat
Integrated photonics and quantum information technologies demand compact, energy‐efficient, and wavelength‐tunable coherent light sources. Metal halide perovskites have recently emerged as a versatile class of gain media for photonic applications ...
Kang Wang, Maria Vasilopoulou, Thamraa Alshahrani, Ilhwan Ryu, Muhammad Fazri bin Jasmin, Muhammad Danish Danial bin Zulkifli, Aliff Muhaimin bin Kamaruzaman, Muhammad Nafie bin Jakariah, Peng Gao, Abd Rashid bin Mohd Yusoff, Yong Sheng Zhao   +10 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Comparative Study of Thermal Lens Effect in End Pulsed-Pumped Ceramics and Single Crystal Yb3+ YAG- Cr4+ YAG Passively Q-switched Microchip Laser. [PDF]

Journal of Bioscience and Applied Research, 2016
In this work, different thermal lens focal lengths with different pumping repetition rates for ceramic and single crystal Yb:YAGare calculated for controlling the thermal focal length without using additional optical elements .
Y. S. Nada, S. M. A. Maize
doaj   +1 more source