Zobrazeno 1 - 10
of 83
pro vyhledávání: '"N. Jhajj"'
Publikováno v:
Physical Review X, Vol 6, Iss 3, p 031037 (2016)
We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). A STOV is an optical vortex with phase and energy circulation in a spatiotemporal plane. Depending on the sign of the material
Externí odkaz:
https://doaj.org/article/ecd828d9084045c49c31dbcbabf41a15
Publikováno v:
Physical Review X, Vol 4, Iss 1, p 011027 (2014)
We demonstrate that femtosecond filaments can set up an extended and robust thermal waveguide structure in air with a lifetime of several milliseconds, making possible the very-long-range guiding and distant projection of high-energy laser pulses and
Externí odkaz:
https://doaj.org/article/a790d16afdbb46a4a5295de75a8dfb5d
Publikováno v:
Frontiers in Optics / Laser Science.
We present results on the modal and quasi-modal linear propagation in a dispersive medium of ultrashort pulses carrying spatiotemporal optical vortices. We isolate contributions of wavefront tilt and dispersion to the optical angular momentum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f206bed87df7ffa8c67362c0f4272f9
https://doi.org/10.1364/fio.2020.fm7c.8
https://doi.org/10.1364/fio.2020.fm7c.8
Publikováno v:
New Journal of Physics, Vol 15, Iss 7, p 075002 (2013)
We investigate high-power terahertz (THz) generation in two-color laser filamentation using terawatt (TW) lasers including a 0.5 TW, 1 kHz system, as well as 2 and 30 TW systems both operating at 10 Hz. With these lasers, we study the macroscopic eff
Externí odkaz:
https://doaj.org/article/524bc2425d51418b98ecccca7f3e07d9
Publikováno v:
Physical Review X. 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62df764cafc4d19e925efce711ca7c09
https://doi.org/10.1103/physrevx.7.049901
https://doi.org/10.1103/physrevx.7.049901
Publikováno v:
Frontiers in Optics 2017.
The axial energy deposition profile of an extended femtosecond filament is captured in a single shot over a >10 m propagation distance by an array of synchronized microphones.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccfde3ac629ddb1788c127715b068e78
https://doi.org/10.1364/fio.2017.jtu3a.65
https://doi.org/10.1364/fio.2017.jtu3a.65
Autor:
Ilia Larkin, N. Jhajj, Sina Zahedpour, Howard Milchberg, E. W. Rosenthal, Jared Wahlstrand, George Hine
Publikováno v:
Frontiers in Optics 2017.
Nonlinearly propagating beams undergoing optical collapse are shown to universally self-generate a previously unobserved type of optical vortex: the spatiotemporal optical vortex (STOV). Beams with STOVs possess orbital angular momentum transverse to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::859fdbb345bb0c44726a079585ded6c4
https://doi.org/10.1364/fio.2017.fm3b.6
https://doi.org/10.1364/fio.2017.fm3b.6
Publikováno v:
Physical Review X, Vol 6, Iss 3, p 031037 (2016)
We present the first experimental evidence, supported by theory and simulation, of spatiotemporal optical vortices (STOVs). A STOV is an optical vortex with phase and energy circulation in a spatiotemporal plane. Depending on the sign of the material
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cc1abcf558ed26b0176968a8490ec7d
https://doi.org/10.1103/physrevx.6.031037
https://doi.org/10.1103/physrevx.6.031037
Publikováno v:
Optics letters. 41(16)
We present spatially resolved measurements of energy deposition into atmospheric air by femtosecond laser filaments. Single filaments formed with varying laser pulse energy and pulsewidth were examined using longitudinal interferometry, sonographic p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70ef8c1325889839de61029404256a39
https://pubmed.ncbi.nlm.nih.gov/29400860
https://pubmed.ncbi.nlm.nih.gov/29400860
Publikováno v:
Optics Letters. 44:199
The thermal density depression (or "density hole") produced by a high-repetition-rate femtosecond filament in air acts as a negative lens, altering the propagation of the filament. We demonstrate the effects of externally driven gas motion on these d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c04208421b3789638677353241cd71
https://doi.org/10.1364/ol.44.000199
https://doi.org/10.1364/ol.44.000199