Zobrazeno 1 - 10
of 77
pro vyhledávání: '"P. Woskoboinikow"'
Publikováno v:
Optics letters. 4(7)
A two-component saturable gas absorber composed of formic acid and SF(6) in separate cells has been successfully used as an isolator in a TEA-CO(2)-amplifier chain for amplifying several 9-microm-band transitions. This isolator suppressed all amplifi
Publikováno v:
International Journal of Infrared and Millimeter Waves. 4:205-229
The application of advanced millimeter/far infrared sources to substantially improve the effectiveness of collective Thomson scattering plasma diagnostics is discussed. Gyrotrons, CO/sub 2/ lasers and far infrared lasers which are optically pumped wi
Publikováno v:
Nuclear Fusion. 21:1028-1031
A sub-miliimeter-wave heterodyne receiver designed for a D2O laser Thomson scattering ion temperature diagnostic has been used to measure the synchrotron emission from the Alcator A tokamak at 762 ? 11 GHz down to levels of 10?20 W?Hz?1. A comparison
Autor:
Richard J. Temkin, P. Woskoboinikow, K.E. Kreischer, B.G. Danly, W. J. Mulligan, J. L. Byerly
Publikováno v:
Scopus-Elsevier
The results of a study of second-harmonic emission from a gyrotron designed for high-power high-frequency operation at the fundamental of the cyclotron frequency are presented. Stable, very narrow bandwidth second-harmonic cavity emission from 209 GH
Autor:
P. Woskoboinikow
Publikováno v:
Review of Scientific Instruments. 57:2113-2118
Recent advances in high‐frequency (>100 GHz) gyrotron technology are reviewed and application to millimeter/submillimeter wave plasma diagnostics is discussed. Gyrotrons have useful capabilities of high‐power (>1 kW), long pulse/cw operation, nar
Publikováno v:
IEEE Journal of Quantum Electronics. 19:4-7
First linewidth measurements over a 60 dB dynamic range of a pulsed, high-power, optically pumped far infrared laser are presented. These measurements were made possible by using a 385 μmD 2 O laser with an N 2 O absorption filter and a sensitive he
Publikováno v:
International Journal of Infrared and Millimeter Waves. 4:1045-1059
Autor:
Daniel R. Cohn, P. Woskoboinikow, Jerry Waldman, K. Isobe, Z. Drozdowicz, Richard J. Temkin, Kenneth J. Button
Publikováno v:
Scopus-Elsevier
Single mode, 60-80 ns pulse width, 50-70 kW peak power laser oscillators operating on the 384.6 μm line of D 2 O have been developed. The characteristic linewidths of these oscillators are less than 25 MHz full width at half maximum which favorably
Publikováno v:
IEEE Journal of Quantum Electronics. 21:14-17
Power levels of 17 kW in 0.7 μs pulses have been obtained from the 2.14 mm transition of NH 3 when optically pumped by a 65 J CO 2 TEA laser. Photon conversion efficiencies of 11 percent have been achieved. This is the first high-power laser line ob
Publikováno v:
Journal of Applied Physics. 52:7099-7106
Electron cyclotron emission (ECE) from thermal plasmas in the Alcator A tokamak for harmonics from 2nd through 5th and up to the 7th harmonic for nonthermal plasmas have been observed in the frequency range of 400–800 GHz using a sensitive, low‐n