Results 31 to 40 of about 87,502 (260)

High-Power External Spatial Beam Combining of 7-Channel Quantum Cascade Lasers Emitting at ~8.5 μm

Photonics
Based on the demand for high-power output, a spatial beam combining 7-channel quantum cascade lasers (QCLs) is demonstrated in this paper. A “2 + 3 + 2” stepped structure is designed to convert the seven beam spots into a circular arrangement.
Haibo Dong, Xuyan Zhou, Man Hu, Yuan Ma, Aiyi Qi, Weiqiao Zhang, Wanhua Zheng   +6 more
doaj   +1 more source

Research on beam quality control technology of 2 μm antimonide semiconductor laser

Frontiers in Physics, 2022
Antimonide semiconductor laser is a new type of laser with unique advantages in the 2 μm band. However, employing FP cavities causes multiple transverse modes to degrade beam quality despite achieving higher power output.
Sensen Li, Jingsheng Zhang, Xiangzheng Cheng, Ming Shao, Qianghu Liu, Jiashuo An, Shun Li, Shun Li, Xinmin Fan, Xinmin Fan   +9 more
doaj   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Frequency Comb-Based Seed Laser Architecture With Improved Brillouin Performance for Spectral Beam Combining of Narrow-Linewidth Lasers

IEEE Photonics Journal
This study presents a novel approach to spectral beam combining for achieving high output powers with a compact, single module seed laser source based on frequency combs.
Shilpi Arora, Soubhik Pal, C. G. Lakshmi, Sarthak Dash, V.R. Supradeepa   +4 more
doaj   +1 more source

New beam-combination Techniques at IOTA [PDF]

SPIE Proceedings, 2003
New beam combination techniques, using two and three telescopes, have been the focus of activity at IOTA during the past two years since our last update. In particular, we have added a third telescope, made closure-phase measurements, demonstrated two- and three-beam combination with integrated optics combiners, demonstrated two-beam combination with ...
Traub, W. A., Ahearn, A., Carleton, N. P., Berger, J.-P., Brewer, M., Hofmann, K. H., Kern, P., Lacasse, M. G., Malbet, F., Millan-Gabet, R., Monnier, J. D., Ohnaka, K., Pedretti, E., Ragland, S., Schloerb, F. P., Souccar, K., Weigelt, G.   +16 more
openaire   +2 more sources

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Research of Laser Beam Combining in Ring Fiber-Optic Delay Line

Приборы и методы измерений, 2023
At present time widespread use of autonomous laser systems supposes reducing of supply energy, consumed by laser sources that are included in their composition and at the same time increasing of their output energy characteristics.
M. R. Zaripov, V. A. Alekseev, A. I. Kirillov, A. V. Oficerova   +3 more
doaj   +1 more source

Revisit of combined parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging [PDF]

Medical Physics, 2013
Purpose:This aim of this paper is to revisit the parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging configuration, and to investigate whether this configuration has any advantages.Methods:Twenty years ago, it was suggested to simultaneously use a parallel‐beam (or a fan‐beam) collimator and a cone‐beam collimator to acquire single photon emission ...
openaire   +2 more sources

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

Tapered Multicore Fiber for High-Power Laser Amplifiers

IEEE Photonics Journal, 2022
The problem of coherent amplification of the out-of-phase mode in tapered multicore fibers with cores arranged in a ring and in a square lattice is studied theoretically.
A. V. Andrianov, S. A. Skobelev, A. A. Balakin, E. A. Anashkina, A. G. Litvak   +4 more
doaj   +1 more source