Results 61 to 70 of about 83,581 (314)

Laser power stabilization via radiation pressure [PDF]

, 2021
This Letter reports the experimental realization of a novel, to the best of our knowledge, active power stabilization scheme in which laser power fluctuations are sensed via the radiation pressure driven motion they induce on a movable mirror. The mirror
Lanza , R., Cole, Garrett D., Trad Nery, Marina, Nery, M., Corbitt , T., Cripe, Jonathan, Willke, Benno, Aggarwal, Nancy, Cole , G., Willke, B., Corbitt, Thomas, Lanza, Robert, Cripe , J., Nery, Marina Trad, Venneberg, J., Aggarwal , N., Venneberg, Jasper R.   +16 more
core   +2 more sources

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

Laser frequency stabilization using a spatially multiplexed microfabricated Rb vapor cell

Applied Physics Express
We demonstrate a laser stabilization based on a spatially-multiplexed, microfabricated rubidium vapor cell. This design integrates multiple optical apertures within a cell, enabling a single input beam to simultaneously capture both Doppler-broadened and
Seji Kang, Soyeon Choi, Jaeuk Baek, Sang Eon Park, Jongcheol Park, Yeeun Na, Taeg Yong Kwon, Sang-Bum Lee, Jae Hoon Lee, Sangwon Seo, Young-Ho Park, Meung Ho Seo, Hyun-Gue Hong   +12 more
doaj   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

Performance of a compact, continuous-wave terahertz based on a quantum-cascade laser [PDF]

, 2010
We report on the development of a compact, easy-to-use terahertz radiation source, which combines a quantum cascade laser (QCL) with a compact, low-input-power Stirling ...
Richter, Heiko, Schrottke, Lutz, Grahn, H. T., Giehler, M., Wienold, Martin, Huebers, H.-W., Pavlov, Sergey, Greiner-Bär, Michael, Semenov, Alexei D., Hey, R.   +9 more
core  

Effect of laser treatment on postural control parameters in patients with chronic nonspecific low back pain: a randomized placebo-controlled trial [PDF]

Brazilian Journal of Medical and Biological Research, 2019
The management of nonspecific lumbar pain (NSLP) using laser irradiation remains controversial. A systematic review of recently published studies indicates that the effects of laser therapy are commonly assessed using only imperfect methods in terms of ...
J. Taradaj, K. Rajfur, J. Rajfur, K. Ptaszkowski, L. Ptaszkowska, M. Sopel, J. Rosińczuk, R. Dymarek   +7 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Red-Pitaya-Based Frequency Stabilization of 1560-nm Fiber Laser to 780-nm Rubidium Atomic Transition via Single-Pass Frequency Doubling

Photonics
The single-step Rydberg excitation of cesium atoms requires a 319 nm ultraviolet laser with a narrow laser linewidth, high frequency stability, and high output power.
Yirong Wei, Ziwen Wang, Yuewei Wang, Yuhui Yang, Tao Wang, Rui Chang, Junmin Wang   +6 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

A single-frequency, diode-pumped Nd:YLF laser at 657 nm: a frequency and intensity noise comparison with an extended cavity diode laser [PDF]

, 2015
FAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOCAPES - COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIORWe report on a continuous wave, diode-pumped, intracavity ...
Wetter, N. U., Zondy, J. J., Cruz, F. C., Nunez Portela, M.   +3 more
core   +1 more source