Results 21 to 30 of about 5,546,675 (248)

Average paraxial power of a lens and visual acuity

open access: yesScientific Reports, 2023
To provide a solution for average paraxial lens power (ApP) of a lens. Orthogonal and oblique sections through a lens of power $$F$$ F were reduced to a paraxial representation of lens power followed by integration.
Stephen B. Kaye   +2 more
doaj   +1 more source

Power Efficiency Improvements through Peak-to-Average Power Ratio Reduction and Power Amplifier Linearization

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
Many modern communication signal formats, such as orthogonal frequency-division multiplexing (OFDM) and code-division multiple access (CDMA), have high peak-to-average power ratios (PARs).
Zhou G Tong, Qian Hua, Chen Ning
doaj   +2 more sources

Research Paper: Producing High Average Power Pulses From the Yb:YAG Thin-disk Active Medium with Acousto-optic Modulator [PDF]

open access: yesفیزیک کاربردی ایران
In recent years, thin-disk active media geometry has facilitated the development of pulsed and continuous laser sources with extremely high output powers. In this study, the technique of Q-switching utilizing an acousto-optic modulator and a Yb: YAG thin-
Kaveh Pasandideh   +3 more
doaj   +1 more source

CORRECTION OF ERRORS OF THE MEASURING CHANNEL AVERAGE ACTIVE POWER

open access: yesТехнічна електродинаміка, 2022
In the article is offered the structural scheme of error correction of the precision measuring channel of average active power for researches in laboratory conditions and exclusively within the limits of changes of the basic frequency of a network.
Д.П. Орнатський   +2 more
doaj   +1 more source

High-average-power harmonic generation [PDF]

open access: yesConference on Lasers and Electro-Optics, 1985
High-average-power harmonic generation has been limited in the past by the average-power capabilities of the fundamental frequency source. The power densities required for efficient harmonic generation could be reached only by focusing the fundamental in the nonlinear medium.
openaire   +1 more source

High average power 1314 nm Nd:YLF laser, passively Q-switched with V:YAG [PDF]

open access: yes, 2013
A 1314 nm Nd:YLF laser was designed and operated both CW and passively Q-switched. Maximum CW output of 10.4 W resulted from 45.2 W of incident pump power. Passive Q-switching was obtained by inserting a V:YAG saturable absorber in the cavity.
Bollig, C.   +8 more
core   +1 more source

Peak-to-average power ratio of good codes for Gaussian channel [PDF]

open access: yes, 2014
Consider a problem of forward error-correction for the additive white Gaussian noise (AWGN) channel. For finite blocklength codes the backoff from the channel capacity is inversely proportional to the square root of the blocklength.
Polyanskiy, Yury, Wu, Yihong
core   +2 more sources

Monolithic Yb-Doped Femtosecond Fiber Laser With >300 W Average Power

open access: yesIEEE Photonics Journal, 2023
In this submission, we report a maximum 638-W fiberized chirped-pulse-amplification (CPA) laser system with a bulk reflection grating compressor. The system is able to emit 338-W compressed pulses of 624 fs centered at 1 µm, corresponding to a ...
Chenyang Gao   +7 more
doaj   +1 more source

Transmit Power Minimization for MIMO Systems of Exponential Average BER with Fixed Outage Probability [PDF]

open access: yes, 2016
This document is the Accepted Manuscript version of the following article: Dian-Wu Yue, and Yichuang Sun, ‘Transmit Power Minimization for MIMO Systems of Exponential Average BER with Fixed Outage Probability’, Wireless Personal Communications, Vol.
A Goldsmith   +32 more
core   +3 more sources

First-Order Integer-Valued Moving Average Process with Power Series Innovations

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
In this paper, we introduce a first-order nonnegative integer-valued moving average process with power series innovations based on a Poisson thinning operator (PINMAPS(1)) for modeling overdispersed, equidispersed and underdispersed count time series ...
Eisa Mahmoudi, Ameneh Rostami
doaj   +1 more source

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