排序方式: 共有6条查询结果,搜索用时 5 毫秒
1
1.
N. Naumov V. Petrovskiy E. Protsenko V. Yermachenko 《Applied physics. B, Lasers and optics》1997,65(4-5):589-593
4 gas laser with an intracavity absorbing cell is studied experimentally and theoretically at a modulation frequency approximately
equal to the intermode beat frequency. It is revealed that in the vicinity of the absorption-line centre the intensity of
every mode for certain system parameters displays resonance structures narrower than the homogeneous line width of the absorption
line. This occurs when the range of mode synchronization is near the absorption-line centre and its size is less than the
homogeneous width of the absorption line.
Received: 29 February 1996/Revised version: 4 February 1997 相似文献
2.
V. M. Yermachenko Yu. A. Vdovin V. D. Mironov N. V. Naumov V. N. Petrovskiy N. M. Prokopova V. I. Polsky P. S. Dzhumaev V. L. Yakushin 《Laser Physics》2010,20(6):1537-1544
The effect of the radiation of the pulsed fiber laser on the surfaces of cylindrical samples made of the VT16 titanium alloy is studied. It is demonstrated that the irradiation at appropriate parameters of the laser radiation in the inert-gas (argon) atmosphere leads to an increase in the microhardness of the surface layer and a decrease in the surface roughness of the irradiated samples by a factor of five in comparison with the roughness of the original samples. 相似文献
3.
The spectral line shifts Δ(κ) due to the mixing collisions by means of the quantum beats of the photon echoes are analysed. 相似文献
4.
Yermachenko V. M. Kuznetsov A. P. Petrovskiy V. N. Prokopova N. M. Strel’tsov A. P. Uspenskiy S. A. 《Laser Physics》2011,21(8):1530-1537
The properties of the plasma that results from the laser welding of metals at various powers of the 10-kW ytterbium-doped
fiber laser are experimentally studied. A projection system with an image intensifier based on a copper-vapor laser is employed
for the direct observation of metal surface in the course of the laser welding in the presence of the high-intensity background
illumination. A method for the shadow photographing is proposed for the analysis of the presence of metal vapor in plasma,
since such vapor can lead to the reflection of the laser radiation in the course of welding. 相似文献
5.
A new method to measure the relaxation times of population, orientation and alignment of the resonant level is proposed. 相似文献
6.
Felix Sadyrbaev Inara Yermachenko 《Nonlinear Analysis: Theory, Methods & Applications》2009,71(12):e176
A quasi-linear boundary value problem has a solution with properties induced by oscillatory properties of the linear part of an equation. This result is proved for two dimensional systems. Consequences for Φ-Laplacian equations and problems with resonant linear parts are discussed. 相似文献
1