Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Hamed Pourbeyram"'
Autor:
Hamed Pourbeyram, Arash Mafi
Publikováno v:
APL Photonics, Vol 4, Iss 2, Pp 022805-022805-6 (2019)
The intimate interaction between phase-matched parametric amplification and strong nonlinear mode coupling in a multimode optical fiber results in a saturable mode conversion in the anti-Stokes component of the phase-matched four-wave mixing process.
Externí odkaz:
https://doaj.org/article/77f6052ddcdd445ebfd328a55fcd60fe
Autor:
Hamed Pourbeyram, Arash Mafi
Publikováno v:
Photonics, Vol 2, Iss 3, Pp 906-915 (2015)
It is shown that it is possible to couple a laser beam and its frequency-doubled daughter into a multimode optical fiber through the four-wave mixing nonlinear process and generate a new wavelength. The frequency-doubled daughter can be generated in
Externí odkaz:
https://doaj.org/article/66ed53538dea4a229bf0c56e47e402f0
Autor:
Hamed Pourbeyram, Pavel Sidorenko, Fan O. Wu, Nicholas Bender, Logan Wright, Demetrios N. Christodoulides, Frank Wise
Publikováno v:
Nature Physics. 18:685-690
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::514a3a2675d79836a3ef481eeae1d58c
https://doi.org/10.1038/s41567-022-01579-y
https://doi.org/10.1038/s41567-022-01579-y
Publikováno v:
Optics letters. 46(13)
Kerr beam cleaning in graded-index multimode fiber has been investigated in experiments with sub-nanosecond pulses and in experiments with femtosecond pulses at wavelengths where the dispersion is normal. We report a theoretical and experimental stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b02e4622723f6c6ebfad6624b9c06f7
https://pubmed.ncbi.nlm.nih.gov/34197444
https://pubmed.ncbi.nlm.nih.gov/34197444
Publikováno v:
Conference on Lasers and Electro-Optics.
We experimentally investigate a recently-proposed thermodynamic theory of highly multimode nonlinear optical systems. Mode-resolved measurements demonstrate thermalization of the distribution via the Kerr nonlinearity in multimode optical fiber.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cc160aa07225fdc5018b808e44f04e4
https://doi.org/10.1364/cleo_si.2020.sm1p.6
https://doi.org/10.1364/cleo_si.2020.sm1p.6
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
Beam cleanup in multimode optical fiber is investigated with femtosecond pulses and anomalous dispersion. Beam cleaning is accompanied by dramatic temporal pulse compression.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f746a50d97edaa5c4ef4051a86058f90
https://doi.org/10.1364/np.2020.npth3d.3
https://doi.org/10.1364/np.2020.npth3d.3
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
We report observation of optical thermalization in ultrashort pulse propagation in the normal dispersion regime. Mode-resolved measurements provide direct evidence of thermalization of mode occupancies via the Kerr nonlinearity in a multimode fiber.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::799fedc431c9f6a5db16d15b2fe61d28
https://doi.org/10.1364/np.2020.npth3d.7
https://doi.org/10.1364/np.2020.npth3d.7
Autor:
Curtis R. Menyuk, Boris A. Malomed, Logan G. Wright, Andrei Isichenko, Frank W. Wise, Zachary M. Ziegler, Hamed Pourbeyram, Demetrios N. Christodoulides, Pavel Sidorenko
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
We uncover the mechanisms behind a range of new 3D solitons in multimode lasers using an approach called attractor dissection. Experimental measurements allow us to decompose multimode states containing up to 30 million locked modes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28d3b80e190be8965aa02b382420cf8c
https://doi.org/10.1364/np.2020.nptu3d.6
https://doi.org/10.1364/np.2020.nptu3d.6
Autor:
Logan G. Wright, Boris A. Malomed, Andrei Isichenko, Zachary M. Ziegler, Hamed Pourbeyram, Frank W. Wise, Demetrios N. Christodoulides, Pavel Sidorenko, Curtis R. Menyuk
Mode-locking is a process in which different modes of an optical resonator establish, through nonlinear interactions, stable synchronization. This self-organization underlies light sources that enable many modern scientific applications, such as ultr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5aebe9b0545cf62cbd9194fd3e0f631
Autor:
Hamed Pourbeyram, Arash Mafi
Publikováno v:
Optics letters. 43(9)
We study theoretically the generation of photon pairs with controlled spectral correlations via the four-wave mixing (FWM) process in graded-index multimode optical fibers (GIMFs). We show that the quantum correlations of the generated photons in GIM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41863052c1a11724a59edc7a31a0019a
https://pubmed.ncbi.nlm.nih.gov/29714735
https://pubmed.ncbi.nlm.nih.gov/29714735