Results 21 to 30 of about 176,621 (116)

An all-silicon design of a high-efficiency broadband transmissive terahertz polarization convertor

open access: yesFrontiers of Optoelectronics, 2023
Polarization, a fundamental behavior of electromagnetic waves, holds immense potential across diverse domains such as environmental monitoring, biomedicine, and ocean exploration.
Xiaohua Xing   +4 more
doaj   +1 more source

In-vacuum post-compression of optical probe pulses for relativistic plasma diagnostics

open access: yesHigh Power Laser Science and Engineering
Ultrafast optical probing is a widely used method of underdense plasma diagnostic. In relativistic plasma, the motion blur limits spatial resolution in the direction of motion.
S. Lorenz   +19 more
doaj   +1 more source

A comprehensive diagnostic system of ultra-thin liquid sheet targets

open access: yesHigh Power Laser Science and Engineering
To meet the demands of laser-ion acceleration at a high repetition rate, we have developed a comprehensive diagnostic system for real-time and in situ monitoring of liquid sheet targets (LSTs).
Ziyang Peng   +21 more
doaj   +1 more source

On the long-run evolution of inheritance: France 1820-2050 [PDF]

open access: yes
This paper attempts to document and account for the long run evolution of inheritance. We find that in a country like France the annual flow of inheritance was about 20%-25% of national income between 1820 and 1910, down to less than 5% in 1950, and back
Thomas Piketty
core  

Lasing without population inversion in N2+

open access: yesAPL Photonics, 2019
We experimentally demonstrate the existence of long-lived coherent polarizations coupling simultaneously ground state X (X2Σg+) to excited states A (A2Πu) and B (B2Σu+) of N2+ inside a plasma created by a short intense laser pulse at 800 nm.
A. Mysyrowicz   +9 more
doaj   +1 more source

Nonlinear optical microscopy with achromatic lenses extending from the visible to the mid-infrared

open access: yesAPL Photonics, 2019
With the advent of near-infrared broadband sources stretching into the mid-infrared (MIR) region, there is a growing demand for optical components with utility over an increasingly broad spectral range.
Adam M. Hanninen, Eric O. Potma
doaj   +1 more source

Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED

open access: yesFrontiers of Optoelectronics
A series of Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors were prepared by high-temperature solid-state method for dual-emission center optical thermometers and white light-emitting diode (WLED) device. By modulating the doping ratio of Bi3+/Eu3+
Jingjing Ru   +5 more
doaj   +1 more source

The Farm Labor Force by Region, 1820-1860: Revised Estimates and Implications for Growth [PDF]

open access: yes
This paper sets forth new estimates of the farm labor force covering the period 1820 to 1860, for the United States and the major geographic regions. At the national level, the new figures are noticeably different from the previous estimates.
Thomas Weiss
core  

Deep-ultraviolet Fourier ptychography (DUV-FP) for label-free biochemical imaging via feature-domain optimization

open access: yesAPL Photonics
We present deep-ultraviolet Fourier ptychography (DUV-FP) for high-resolution chemical imaging of biological specimens in their native state without exogenous stains.
Qianhao Zhao   +5 more
doaj   +1 more source

Flexible organic optoelectronic devices: Design, fabrication, and applications

open access: yesAPL Photonics
Flexible organic optoelectronic devices (FOODs) are rapidly emerging as a transformative technology in consumer electronics due to their exceptional bendability, lightweight, and seamless integration capabilities.
Yuanhe Wang   +5 more
doaj   +1 more source

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