Zobrazeno 1 - 10
of 52
pro vyhledávání: '"V V Semak"'
Publikováno v:
AIP Advances, Vol 9, Iss 8, Pp 085016-085016-7 (2019)
Measurements of the water absorption coefficient at a laser wavelength of 1064 nm are reported as a function of water temperature. A low power laser beam was used as the probe. The measurement net procedure took into consideration the absorption of t
Externí odkaz:
https://doaj.org/article/0304830a995249ec947fa1d8e6e2a3c6
Autor:
V. V. Semak, Mikhail N. Shneider
Publikováno v:
Physics Letters A. 387:127031
We present the results of numerical experiments performed using our recently developed Atomic Oscillator model of re-radiation by atomic dipole induced by an incident coherent electro-magnetic wave. Unlike the commonly known Lorentz Oscillator model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb5c9d48d3e917a79a44cb8960e5cca1
https://doi.org/10.1016/j.physleta.2020.127031
https://doi.org/10.1016/j.physleta.2020.127031
Autor:
Mikhail N. Shneider, V. V. Semak
Publikováno v:
OSA Continuum. 3:1819
Our theoretical model of forced dipole oscillation demonstrates that when the amplitude of the forcing field is changing fast, the oscillations of the bound electron in the atom or molecule initially proceed at two frequencies: the frequency of the n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::770b7f0bf4a6810dc61c51ecee043b49
https://doi.org/10.1364/osac.399109
https://doi.org/10.1364/osac.399109
Autor:
V. V. Semak, Mikhail N. Shneider
Publikováno v:
OSA Continuum. 3:186
In this work, we present a hypothesis that spectral response of atoms or molecules to a pulse of electro-magnetic radiation with fast rising or falling fronts would contain a unique emission line that is located approximately near the frequency of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd5e3579aa3dd3da7c5da5b3951e79d8
https://doi.org/10.1364/osac.381477
https://doi.org/10.1364/osac.381477
Autor:
V. V. Semak, Mikhail N. Shneider
Publikováno v:
OSA Continuum. 2:2343
A theoretical model of the nonlinear electron oscillations in an atom exposed to electro-magnetic wave is described. This model considers electron motion as a nonharmonic periodic function, unlike the current approach based on a perturbation solution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee789f4ae24d10ee1cee257c3d27a488
https://doi.org/10.1364/osac.2.002343
https://doi.org/10.1364/osac.2.002343
Publikováno v:
Journal of Laser Applications. 22:7-12
Laser machining is now an accepted method for shaping and modifying ceramics and is rapidly replacing other methods such as grinding and etching. In fact, new innovations such as short pulsed or femtosecond lasers have drastically decreased the amoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b9e2090fcf657af3c549b0f9c279a41
https://doi.org/10.2351/1.3369387
https://doi.org/10.2351/1.3369387
Publikováno v:
Applied Surface Science. 253:6334-6338
A commercial femtosecond pulse laser was used to study the interaction of ultrashort laser pulses with aluminum. Tests were conducted to measure the average drilling rate over a range of laser pulse energies in both air and vacuum at the wavelengths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f574512b9b3414fdace1e487350a818e
https://doi.org/10.1016/j.apsusc.2007.01.063
https://doi.org/10.1016/j.apsusc.2007.01.063
Publikováno v:
Journal of Physics D: Applied Physics. 39:3440-3449
The results of the interaction of 200?fs and 4?ns laser pulses produced by a Ti?:?Sapphire commercial laser system with various materials are reported. The drilling rates were measured as a function of laser pulse energy and material thickness. Satur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d45408fcdc42d60547cb1c4230ba33b
https://doi.org/10.1088/0022-3727/39/15/031
https://doi.org/10.1088/0022-3727/39/15/031
Publikováno v:
Journal of Physics D: Applied Physics. 39:590-595
A previously developed model for simulation of recoil-pressure induced melt displacement during laser pulse interaction has been upgraded to include the restraining effect of surface tension. The results of numerical simulations of melt displacement/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b3677c5e9b3d4dba7d8e603e8264f9a
https://doi.org/10.1088/0022-3727/39/3/025
https://doi.org/10.1088/0022-3727/39/3/025
Publikováno v:
Journal of Physics D: Applied Physics. 37:2925-2931
The results of interaction of single and multiple 200 fs laser pulses with thick stainless steel and HgCdTe samples are reported. The threshold laser energy density required to produce surface melting is measured. The melt dynamics and evolution of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4011b1c13cb7c551020fffc10a3c7812
https://doi.org/10.1088/0022-3727/37/20/022
https://doi.org/10.1088/0022-3727/37/20/022