Results 111 to 120 of about 277,643 (298)

High-power high-energy Yb-doped CaGdAlO4 regenerative amplifier with approximately 130 fs pulses

open access: yesHigh Power Laser Science and Engineering
We demonstrated a high-power, high-energy regenerative amplifier (RA) based on Yb-doped CaGdAlO4 (Yb:CALGO) crystal, which achieves a maximum average power exceeding 50 W at a repetition rate greater than 50 kHz, and a maximum pulse energy of ...
Zhengru Guo   +6 more
doaj   +1 more source

Nd : Glass ring regenerative amplifier using telescopic geometry for high output energy with good beam quality

open access: yes, 1998
To achieve high output energy by generating a large gain mode volume, a Nd:phosphate glass ring regenerative amplifier with a built-in 1:1 telescope was proposed as a part of a terawatt chirped-pulse amplification Nd:glass laser, and its performance was ...
Kim, BT   +3 more
core   +1 more source

Interface Engineering of Porous Transport Layer‐Catalyst Layer in Proton Exchange Membrane Water Electrolyzers: A Comprehensive Review

open access: yesAdvanced Materials Interfaces, EarlyView.
The PTL–CL interface plays a decisive role in PEMWE performance by governing electron conduction, water supply, oxygen removal, catalyst utilization, and interfacial stability. This review summarizes interface‐related resistance sources, characterization methods, and engineering strategies, highlighting rational PTL–CL interface design for low‐cost ...
Aobo Wan, Zhengkai Tu
wiley   +1 more source

A Promising Route to Compact and Economic Sub-15 fs, PW-Level Ti:Sapphire Lasers

open access: yesPhotonics
In quest of achieving compact and economic PW-level Ti:Sapphire (Ti:sa) lasers with a sub-15 fs pulse duration, a modified hybrid amplification scheme, which combines the optical parametric chirped pulse amplifier (OPCPA) and the chirped pulse amplifier (
Fenxiang Wu   +9 more
doaj   +1 more source

Recent Advances in Transparent Microelectrode Device Architecture and Fabrication Strategies for Biomedical Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Transparent microelectrode arrays enable simultaneous optical and electrical electrophysiology with high spatiotemporal resolution, allowing multimodal observations of dynamic biological systems. Advances in materials and device architectures improve device performance by addressing key trade‐offs between optical transparency, impedance, and ...
Michael Abraham Listyawan   +6 more
wiley   +1 more source

Ultrafast Semiconductor Laser Diode Seeded Cr:Lisaf Regenerative Amplifier System

open access: yes, 1996
An ultrafast modelocked semiconductor laser diode system has been used to seed a flashlamp pumped Cr:LiSAF regenerative amplifier system, producing subpicosecond pulses with millijoule output pulse energy. This system has the potential to eliminate argon
Delfyett, Peter J.   +2 more
core  

Recent Advances in Light‐Addressable Electrochemistry for Spatially Resolved Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This comprehensive review highlights light‐addressable electrochemistry as a powerful tool that uses light to control localized chemical reactions on unstructured semiconductor surfaces. The work evaluates advanced strategies to optimize electrode materials for enhanced spatial resolution and stability. Furthermore, it showcases diverse applications in
Nhi Trang Vo   +2 more
wiley   +1 more source

Self‐Sealing Microneedles Improve Precision and Reduce Reflux in Subretinal Cell Transplantation

open access: yesAdvanced Materials Technologies, EarlyView.
Ultrafine 49G microneedles enable subretinal delivery of induced pluripotent stem cell‐derived retinal pigment epithelial cells through a 50 µm outer diameter tip. Compared with conventional 38G microcannulas, these microneedles reduce cell suspension reflux in a rabbit model, highlighting the potential of microinvasive delivery instruments to improve ...
Jared Ching   +9 more
wiley   +1 more source

Regenerative spectral and pulse shaping of high averagepower chirped pulse thin-rod Yb:YAG amplifier [PDF]

open access: yes, 2009
Spectral gain narrowing of high-average power, regenerative chirped pulse thin-rod Yb:YAG amplifier was compensated by the regenerative spectral and pulse shaping technique.
MATSUBARA, Shinichi   +7 more
core  

28 W, 217-fs regenerative bulk amplifier based on Yb:CAlGdO4

open access: yes, 2014
Yb:CaAlGdO4 (Yb:CALGO) is a very promising material for high power ultrashort pulse generation, due to its broad emission bandwidth and good thermal properties.
M. Kemnitzer   +8 more
core   +1 more source

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