The output of seven laser-diode arrays, combined by a bundle of seven optical fibers, was used to end pump a Nd:YAG solid-state laser. Under a rated operation of 1 A/diode, maximum TEM(00) single-mode output power of 660 mW was obtained with 4.4% total electrical-to-optical conversion efficiency.
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http://dx.doi.org/10.1364/ol.13.000306 | DOI Listing |
Rev Sci Instrum
December 2024
OFS Laboratories, 19 Schoolhouse Road, Somerset, New Jersey 08873, USA.
Transmission matrix measurements of multimode fibers are now routinely performed in numerous laboratories, enabling control of the electric field at the distal end of the fiber and paving the way for the potential application to ultrathin medical endoscopes with high resolution. The same concepts are applicable to other areas, such as space division multiplexing, targeted power delivery, fiber laser performance, and the general study of the mode coupling properties of the fiber. However, the process of building an experimental setup and developing the supporting code to measure the fiber's transmission matrix remains challenging and time consuming, with full details on experimental design, data collection, and supporting algorithms spread over multiple papers or lacking in detail.
View Article and Find Full Text PDFBrain Res
December 2024
Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China. Electronic address:
The corpus callosum (CC) is the largest white matter fiber bundle connecting the two hemispheres, facilitating interhemispheric integration and hemispheric specialization. Neuroimaging studies have identified the CC as a marker for aging and various neuropsychiatric disorders. However, studies focusing on high-resolution imaging and detailed lifespan characterizations of CC morphology and connectivity are still limited, highlighting the need for further investigation.
View Article and Find Full Text PDFMicromachines (Basel)
September 2024
State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
The study of high-pressure sound velocity is an important part of shock wave physics, and the study of ultra-high pressure sound velocity of iron is of great significance to many research fields such as geophysics, solid state physics, and crystallography. At present, the measurement of sound velocity is usually carried out by the catch-up sparse wave method and windowed VISAR technology, which is complex in structure and not highly adaptable. In particular, for the ultra-high pressure sonic velocity measurement of metals, it is limited by the loading platform and window materials and cannot realize the high temperature and high-pressure environment of the earth's inner core.
View Article and Find Full Text PDFMicron
August 2024
School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, China.
ACS Sens
April 2024
Department of Dermatology, University of Rochester, Rochester, New York 14627, United States.
Photonic technologies promise to deliver quantitative, multiplex, and inexpensive medical diagnostic platforms by leveraging the highly scalable processes developed for the fabrication of semiconductor microchips. However, in practice, the affordability of these platforms is limited by complex and expensive sample handling and optical alignment. We previously reported the development of a disposable photonic assay that incorporates inexpensive plastic micropillar microfluidic cards for sample delivery.
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