Articles by keywords "efficiency"

A new method for calculating spectral diffractive lenses for focusing laser radiation of various wave lengths

Physical optics
  • Year: 2023
  • Volume: 16
  • Issue: 3.2
  • 4
  • 605
  • Pages: 33-38

Numerical simulation of the parameters of an energy-efficient low-noise transistor for use in the amplification path of a miniature radiothermograph

Physical electronics
  • Year: 2023
  • Volume: 16
  • Issue: 3.1
  • 4
  • 523
  • Pages: 463-467

Development and research of charger operation modes type “needle-plate” for nanoparticle charging

Experimental technique and devices
  • Year: 2023
  • Volume: 16
  • Issue: 3.1
  • 4
  • 568
  • Pages: 408-412

Evaluation of quantum efficiency of InGaAs/InP single-photon detectors in quantum key distribution systems

Simulation of physical processes
  • Year: 2023
  • Volume: 16
  • Issue: 3.1
  • 7
  • 531
  • Pages: 237-241

Detection-efficiency mismatch in a satellite-to-ground quantum communication

Simulation of physical processes
  • Year: 2023
  • Volume: 16
  • Issue: 3.1
  • 15
  • 646
  • Pages: 216-220

Current and temperature dependences of optical characteristics of powerful deep UV AlGaN LED (λ = 270 nm)

Optoelectronic and nanoelectronic devices
  • Year: 2023
  • Volume: 16
  • Issue: 1.3
  • 21
  • 1410
  • Pages: 170-175

Estimation of the coupling efficiency of optically induced waveguides in a lithium niobate crystal

Physical optics
  • Year: 2023
  • Volume: 16
  • Issue: 1.2
  • 20
  • 1270
  • Pages: 121-125

Change of radiative and low-frequency noise characteristics of UV LEDs based on InGaN/GaN quantum wells at liquid nitrogen temperature

Physical electronics
  • Year: 2023
  • Volume: 16
  • Issue: 1.2
  • 6
  • 1184
  • Pages: 96-102

Mechanisms leading to thermal quantum efficiency droop in green InGaN/GaN LEDs

Physical electronics
  • Year: 2023
  • Volume: 16
  • Issue: 1.2
  • 17
  • 1353
  • Pages: 70-76

Measurement of the internal quantum efficiency of emission in the local region of the LED chip

Physical optics
  • Year: 2022
  • Volume: 15
  • Issue: 3.3
  • 8
  • 1739
  • Pages: 226-229

A comprehensive study of electroluminescence and temperature distribution of “UX:3” AlInGaN LED

Physical electronics
  • Year: 2022
  • Volume: 15
  • Issue: 3.3
  • 7
  • 1698
  • Pages: 142-146

Making a collective expert decision based on the Neumann – Pearson algorithm

Mathematics
  • Year: 2021
  • Volume: 14
  • Issue: 1
  • 38
  • 3634
  • Pages: 155-163

Visible quantum cutting in green emitting BaF2: Gd3+, Tb3+ phosphors: an approach towards mercury-free lamps

Physical materials technology
  • Year: 2017
  • Volume: 10
  • Issue: 3
  • 89
  • 6103
  • Pages: 64-74

Gyrotron research at the St. Petersburg State Polytechnical University

International Collaboration Reports
  • Year: 2013
  • Issue: 4
  • 507
  • 6454
  • Pages: 38-46

The nonlinearity influence of acousto-optic interaction in the paratellurite modulator on the formation of harmonious signals imaging

Physical optics
  • Year: 2011
  • Issue: 4
  • 0
  • 5733
  • Pages: 118-129

Development features of degradation processes in high-power blue InGaN/GaN light-emitting diodes

Experimental technique and devices
  • Year: 2012
  • Issue: 3
  • 0
  • 5634
  • Pages: 45-48

Sensitivity analysis of an optical holographic interferometer based on reflective dynamic gratings

Physical optics
  • Year: 2013
  • Issue: 2
  • 625
  • 6458
  • Pages: 115-120