Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Kyohhei Shigematsu"'
Publikováno v:
Optics Continuum. 2:1053
Coaxial time-resolved spectroscopy (TRS) based on a pump–probe technique using a color-selective double pulse (CSDP) is proposed. The CSDP, generated using an optical pulse shaper (OPS), was composed of different spectral components. Coaxially prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::053c1810617fba4963f25804c4885d21
https://doi.org/10.1364/optcon.483681
https://doi.org/10.1364/optcon.483681
Publikováno v:
Optics letters. 46(7)
We demonstrate a method of measuring group refractive indices ( n g ) by using only a temporal waveform of a color-selective multi-pulse (CSMP) generated with a spatial-light-modulator-based optical pulse shaper. Each pulse of the CSMP is characteriz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::505069377eea7098df9e055200418856
https://pubmed.ncbi.nlm.nih.gov/33793479
https://pubmed.ncbi.nlm.nih.gov/33793479
Publikováno v:
Optics Communications. 308:147-151
The orbital angular momentum (OAM) resolved spectroscopy is being applied to various research fields associated with optical vortices or Laguerre–Gaussian (LG) beams, in which the key technique is to convert LG beams to a fundamental Gaussian ( HG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::914f081c875b382da5f778dbf837b90d
https://doi.org/10.1016/j.optcom.2013.05.050
https://doi.org/10.1016/j.optcom.2013.05.050
Publikováno v:
Physical Review B. 93
The coherent dynamics of the exciton center-of-mass motion in bulk GaN are studied using degenerate four-wave-mixing (FWM) spectroscopy with Laguerre-Gaussian (LG) mode pulses. We evaluate the exciton orbital angular momentum (OAM) dynamics from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c562fff87ecbd7e893e2827248e93f1c
https://doi.org/10.1103/physrevb.93.045205
https://doi.org/10.1103/physrevb.93.045205
Publikováno v:
The Review of Laser Engineering. 46:210
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7b3a2dd0547f58a3c4d457a472f75e7
https://doi.org/10.2184/lsj.46.4_210
https://doi.org/10.2184/lsj.46.4_210
Publikováno v:
Applied Physics Letters. 111:101102
The single orbital angular momentum mode emission from a commercially available broad-area vertical cavity surface emitting laser (VCSEL) is realized with an optical feedback technique using a spatial light modulator, where a computer generated holog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08bc26dbdacfe2922c181d43ced651e2
https://doi.org/10.1063/1.4989479
https://doi.org/10.1063/1.4989479
Publikováno v:
Scopus-Elsevier
The spatiotemporal coherence of excitons is investigated by degenerate four-wave-mixing using optical vortices with multiple orbital angular momentum (OAM). The OAM-resolved signal indicates that the topological phase with large OAM is robust against
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::287e1fbe5ed27ecc3cd3cbc57acafca3
https://doi.org/10.1364/cleo_qels.2014.ftu1b.3
https://doi.org/10.1364/cleo_qels.2014.ftu1b.3
Publikováno v:
2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEOPR).
We demonstrate the optical parametric amplification of optical-vortex pulses with the programmable topological-charge control. Combination of optical-parametric amplification and 4-f configuration overcomes the low-throughput drawback of the vortex c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c96f19a905c677ac7c7a06c740e4e24
https://doi.org/10.1109/cleopr.2013.6600181
https://doi.org/10.1109/cleopr.2013.6600181
Publikováno v:
Applied Physics Express. 9:122401
By using radially polarized pulses for excitation in degenerate four-wave mixing (DFWM) spectroscopy, we realize highly sensitive snap-shot measurement of optical anisotropies in semiconductor films. Because the radially polarized pulses exhibit spat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d3c5f6d99c8f20a4f5e3b20aaf6bd57
https://doi.org/10.7567/apex.9.122401
https://doi.org/10.7567/apex.9.122401
Publikováno v:
Japanese Journal of Applied Physics. 52:08JL08
We report on the coherent dynamics of the photoexcited orbital angular momentum (OAM) states of GaN excitons. The measurements were performed by a pump-probe four-wave mixing (FWM) using optical vortex (OV) pulses, where the pump OV pulse transfers i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8737d35f31f9d25dc516ea7333080b0
https://doi.org/10.7567/jjap.52.08jl08
https://doi.org/10.7567/jjap.52.08jl08