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S. N. Tskhai Yu. B. Udalov P. J. M. Peters W. J. Witteman V. N. Ochkin 《Applied physics. B, Lasers and optics》1996,62(1):11-14
A radiofrequency excited atomic Xe slab laser with an active volume of 2 × 10 × 300 mm3 using a quartz envelope containing the laser-gas mixture shows a stable cw performance with an output power of almost 1 W. The free-running system oscillates, depending on gas composition and density, on several lines between 1.73 and 3.51 m. Line competition phenomena are observed. Single-line oscillation yields more than 500 mW. 相似文献
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D. A. Tatarskiy A. V. Petrenko S. N. Vdovichev O. G. Udalov Yu. V. Nikitenko A. A. Fraerman 《JETP Letters》2015,102(10):633-636
The effect of nonreciprocal transmission of thermal neutrons (λ = 3–6 Å) through a system of magnetic mirrors with a noncoplanar distribution of the magnetic induction is predicted and observed experimentally. The relative difference between the transmittances for the direct and inverse processes reaches 75%. Thereby, the feasibility of a nonreciprocal cell for spin-1/2 particles is demonstrated. 相似文献
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B. I. Ilukhin Yu. B. Udalov I. V. Kochetov V. N. Ochkin M. B. Heeman-Ilieva P. J. M. Peters W. J. Witteman 《Applied physics. B, Lasers and optics》1996,62(2):113-127
A comprehensive experimental and theoretical study of the optimization of a continuous-wave radiofrequency (rf) excited CO2 waveguide laser is presented. The numerical simulation includes the modelling of the gas-discharge plasma parameters like the plasma impedance and energy deposition, the laser kinetics and finally the influence of the resonator feedback on the lasing process. Along with this theoretical study, an extensive experimental research program enabled us to optimize the laser performance of the CO2 waveguide laser. As a result, a total output power of 42 W and a specific output power of 1.1 W/cm were obtained. 相似文献
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V.Yu. Kurochkin Yu.B. Udalov S.N. Tskhai F.J. Blok P.J.M. Peters W.J. Witteman V.N. Petrovskij E.D. Protsenko 《Applied physics. B, Lasers and optics》1997,65(1):37-40
Received: 28 August 1996/Revised version: 7 November 1996 相似文献
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V. N. Ochkin W. J. Witteman B. I. Ilukhin I. V. Kochetov P. J. M. Peters Yu. B. Udalov S. N. Tskhai S. N. Tskhai 《Applied physics. B, Lasers and optics》1996,63(6):575-583
An analysis is presented of the effect of the RF frequency on the active media of CO2 waveguide lasers. It is found that the characteristics are improved with increasing RF frequency because the space charge sheath width decreases with increasing excitation frequency. We also found that the sheath width decreases with the discharge current; this fact was never discussed before. The higher the exciting frequency the higher is the maximum input power of the discharge in the stable low current mode. It is attractive to extend the input power while keeping the discharge in this mode. Finally, a stabilizing excitation technique is described for the inherent unstable region of the discharge. 相似文献
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Physics of the Solid State - The effect of deformations on magnetic nanoparticles of elliptic, square, and triangular shapes is simulated. The distribution of the magnetization of such particles is... 相似文献
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S.A. Starostin I.V. Kochetov P.J.M. Peters Y.B. Udalov W.J. Witteman A.P. Napartovich 《Applied physics. B, Lasers and optics》2000,71(4):491-494
The performance of a RF excited cw atomic xenon laser at wavelengths of 2.03 μm and 2.65 μm was studied theoretically and
experimentally as a function of electrode distance. Results for inter-electrode distances from 2 to 0.25 mm are presented.
A high pumping rate resulted in strong 40 mW cw amplified spontaneous emission at 2.65 μm wavelength from the configuration
with the smallest distance of 0.25 mm between the electrodes. The maximum laser output of 2.7 W (0.24 W/cm3) was obtained with an active medium volume of 2×15×370 mm3 whereas the maximum specific output of 1.9 W/cm3 was received for an active medium volume of 0.25×2.25×370 mm3. A fluid model of the RF discharge was developed to analyze the laser behavior for different distances between the electrodes.
Received: 30 November 1999 / Revised version: 21 April 2000 / Published online: 6 September 2000 相似文献