Results 261 to 270 of about 1,468,668 (317)
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Novel gain measurement technique for high gain amplifiers
Applied Optics, 1979A new method for determining the gain in high gain amplifiers is reported. The technique only requires measurements of the relative intensity and the output spectral width of the amplified spontaneous emission from the amplifier as a function of input pumping.
B K, Garside, T, Efthymiopoulos
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"High-gain traveling-wave amplifiers"
IRE Transactions on Electron Devices, 1955Modern techniques make it possible to build traveling-wave amplifiers with stable gains as high as 60 or 70 db. Such tubes can have relatively flat frequency response, and high gain over frequency ranges well in excess of two to one. In design it is necessary to pay strict attention to adequate isolation of the input and output so that spurious ...
E.D. Denman, P.M. Lally
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Partly gain-clamped EDFAs with high gain and high power
Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications,, 1999A partly gain-clamped configuration which can realize high output power and high gain simultaneously is proposed. The parameters that affect the critical output power are investigated. Flat gain and low noise figure are also possible with this configuration.
null Yanhong Xiao +5 more
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High-Gain Dual-Band Transmitarray
IEEE Transactions on Antennas and Propagation, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rui Yuan Wu +4 more
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High-order Čerenkov laser gain
Physical Review E, 2003Cerenkov free-electron lasers have primarily operated on the fundamental guided mode of the dielectric waveguide. Higher-order generation would allow short wavelength emission in a relatively large scale resonator. In comparison to the fundamental mode, we find that gain on higher-order modes can be significant in a planar geometry.
I J, Owens, J H, Brownell
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IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.00CH37118), 2002
In some applications, coherently combined multiple antennas are more appropriate than a single larger antenna. Coherent combining produces grating lobes, and one of these lobes must be aligned with the signal. Narrow bandwidth applications use phase shifters for coherent combining, but true time delay compensation is required to maintain combining ...
R.B. Dybdal, K.M. SooHoo
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In some applications, coherently combined multiple antennas are more appropriate than a single larger antenna. Coherent combining produces grating lobes, and one of these lobes must be aligned with the signal. Narrow bandwidth applications use phase shifters for coherent combining, but true time delay compensation is required to maintain combining ...
R.B. Dybdal, K.M. SooHoo
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SPIE Proceedings, 2009
Skyline Solar Inc. has developed a novel silicon-based PV system to simultaneously reduce energy cost and improve scalability of solar energy. The system achieves high gain through a combination of high capacity factor and optical concentration. The design approach drives innovation not only into the details of the system hardware, but also into ...
B. MacDonald +8 more
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Skyline Solar Inc. has developed a novel silicon-based PV system to simultaneously reduce energy cost and improve scalability of solar energy. The system achieves high gain through a combination of high capacity factor and optical concentration. The design approach drives innovation not only into the details of the system hardware, but also into ...
B. MacDonald +8 more
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Applied Physics Letters, 1981
A high-gain N2-CO2 energy transfer laser using a conical nozzle is described. A small-signal gain of 11 m−1 was obtained at a static pressure of 18.3 Torr. In addition, an output power of 4 W was delivered from an 1.2-cm active length.
Hiroshi Hara, Akira Fujisawa
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A high-gain N2-CO2 energy transfer laser using a conical nozzle is described. A small-signal gain of 11 m−1 was obtained at a static pressure of 18.3 Torr. In addition, an output power of 4 W was delivered from an 1.2-cm active length.
Hiroshi Hara, Akira Fujisawa
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High-gain photorefractive polymers
SPIE Proceedings, 1998We report on the photorefractive properties of polymer composites based on the dye 2, N, N-dihexylamino-7- dicyanomethylidenyl-3, 4, 5, 6, 10-pentahydronaphthalene (DHADC-MPN). At 633 nm and with 2,4,7-trinitrofluorenone as a sensitizer, the polyvinylcarbazole-based composites show complete internal diffraction at applied electric fields as low as E(pi
Eric Hendrickx +8 more
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2018
We discuss the free-electron laser physics in high-gain regime in 1D regime, which contains the most important aspects of the free-electron laser dynamics. The high-gain regime is particularly important when mirrors are not available to build oscillators, and has been used as the most straightforward way to produce intense X-rays from FELs.
Kim, Kwang-Je +2 more
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We discuss the free-electron laser physics in high-gain regime in 1D regime, which contains the most important aspects of the free-electron laser dynamics. The high-gain regime is particularly important when mirrors are not available to build oscillators, and has been used as the most straightforward way to produce intense X-rays from FELs.
Kim, Kwang-Je +2 more
openaire +1 more source