Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Nickolai, Zhavoronkov"'
Autor:
Ulrich Bengs, Nickolai Zhavoronkov
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract Circularly polarized attosecond pulses are powerful tool to study chiral light-matter interaction via chiral electron dynamics. However, access to isolated circularly polarized attosecond pulses enabling straightforward interpretation of mea
Externí odkaz:
https://doaj.org/article/9465802786d9405c95b20251a640aae3
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023135 (2022)
The AC Stark shift of electronic levels is ubiquitous in the interaction of intense light fields with atoms and molecules. As the light intensity changes on the rising and falling edges of a femtosecond laser pulse, it shifts the Rydberg states in an
Externí odkaz:
https://doaj.org/article/bdd9547b61aa4a77a95c818904bb7bde
Autor:
Ulrich Bengs, Nickolai Zhavoronkov
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Circularly polarized attosecond pulses are powerful tool to study chiral light-matter interaction via chiral electron dynamics. However, access to isolated circularly polarized attosecond pulses enabling straightforward interpretation of measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a12c84bfa5d5226600271f6b4e8e5cb
https://pubmed.ncbi.nlm.nih.gov/33953228
https://pubmed.ncbi.nlm.nih.gov/33953228
Autor:
Nickolai Zhavoronkov, Rodislav Driben
Publikováno v:
Optics and Photonics Journal. :211-215
Soliton fusion is a fascinating and delicate phenomenon that manifests itself in optical fibers in case of interaction between co-propagating solitons with small temporal and wavelengths separation. The mechanism of graduate acceleration of trailing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::721f51f087f395b1379ab33e8b7288e8
https://doi.org/10.4236/opj.2012.223032
https://doi.org/10.4236/opj.2012.223032
Autor:
Nickolai Zhavoronkov
Publikováno v:
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC).
A Ti:sapphire based laser system provided 30-fs pulses centered at 800 nm with up to 3 mJ energy was used in the experiment. The input beam was focused by a concave mirror with radius of 3 m into a 1.5 m long glass cell. No iris-diaphragm or other be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8d7edb17ef85585266a9c4fac8dd34f
https://doi.org/10.1109/cleoe.2011.5942993
https://doi.org/10.1109/cleoe.2011.5942993
Autor:
Stefan Skupin, Gero Stibenz, Luc Berge, Falk Lederer, Thomas Sokollik, Matthias Schnurer, Nickolai Zhavoronkov, Gunter Steinmeyer
Publikováno v:
2007 Conference on Lasers and Electro-Optics (CLEO).
Self-compression in white-light filaments offers a remarkably simple way for generation of multi-mJ pulses with sub-10-fs duration. We show that optimum compression is achieved at the verge of spatial and temporal break-up of the pulse.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48be7c8ce24910ebeae7c9c5194d2c7c
https://doi.org/10.1109/cleo.2007.4452492
https://doi.org/10.1109/cleo.2007.4452492
Autor:
Stefan Skupin, Luc Bergé, Falk Lederer, Nickolai Zhavoronkov, M. Schnürer, G. Stibenz, Günter Steinmeyer, Thomas Sokollik
Publikováno v:
Physical Review E. 74
We analyze pulse self-compression in femtosecond filaments, both experimentally and numerically. We experimentally demonstrate the compression of 45 fs pulses down to a duration of 7.4 fs at millijoule pulse energies. This sixfold compression in a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::405fc6e9c7f9a9afa32a60784ec78bec
https://doi.org/10.1103/physreve.74.056604
https://doi.org/10.1103/physreve.74.056604
Autor:
Nickolai, Zhavoronkov, Yuri, Gritsai, Matias, Bargheer, Michael, Woerner, Thomas, Elsaesser, Flavio, Zamponi, Ingo, Uschmann, Eckhart, Förster
Publikováno v:
Optics letters. 30(13)
We demonstrate a subpicosecond 1 kHz femtosecond x-ray source with a well-accessible quasi-point size (10 microm diameter) providing Cu K(alpha) emission with a maximum flux of 6.8 x 10(10) photons/s for continuous operation of 10 h. A new geometry t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2d4d39a4877eb97aafb6057dbc5b7aeb
https://pubmed.ncbi.nlm.nih.gov/16075555
https://pubmed.ncbi.nlm.nih.gov/16075555
Autor:
Nickolai Zhavoronkov
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 11:125201
The influence of spatial energy distribution in femtosecond laser beams on filamentary propagation in Ar and on evolution of the temporal shape and phases of the outgoing pulses were investigated. Beams with increased symmetry demonstrate more effici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79b310e2af884bb8f098ad4e467b811d
https://doi.org/10.1088/1464-4258/11/12/125201
https://doi.org/10.1088/1464-4258/11/12/125201
Publikováno v:
Journal of the Optical Society of America B. 22:567
We have developed a compact Ti:sapphire laser system operating at variable repetition rates up to 40 kHz. Pulses of 13.2 fs from a cavity-dumped oscillator were amplified further by a seven-pass confocal amplifier, and after compression 23.8-fs pulse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd567759911ab35467fa4498a08ccf1e
https://doi.org/10.1364/josab.22.000567
https://doi.org/10.1364/josab.22.000567