Efficient near-infrared supercontinuum beam generation in ytterbium-doped double-clad passive fiber

Motomizu, Shoji; Shinozaki, Natsumi; Gisuji, Takuya; Fujii, Yusuke; Iigo, Masayuki; Yamane, Kenji; Sakaue, Kazuyuki; Miura, Taisuke; Higashiguchi, Takeshi

doi:10.1364/josab.36.000048

Cited by 13 publications

(2 citation statements)

References 27 publications

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“…A diode-pumped solid-state (DPSS) laser diode (532 nm, 40 mW; DJ 532-40, Thorlabs) was used as the STED light source for SX excitation measurement. A high-brightness supercontinuum (SC) generator was used as the STED light source for 3.40 eV excitation measurement 16 . The initial pulse was produced using a typical all-normal-dispersion (ANDi) mode-locked fibre oscillator 16,17 .…”

Section: Sted Light Sourcementioning

confidence: 99%

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Demonstration of stimulated emission depletion phenomenon in luminescence of solid-state scintillator excited by soft X-rays

Ejima

Wakayama

Shinozaki

et al. 2020

Sci Rep

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Although imaging techniques using soft X-rays (SXs) are being developed as the available photon flux increases because of the continuing development of synchrotron light sources, it will be necessary to downsize the pixel size of the SX camera to produce finer SX images. Application of the stimulated emission depletion (STED) method to a scintillator plate followed by use of this plate as a sensor is one promising method to reduce the pixel size of SX cameras. A STED phenomenon occurred in the luminescence of a Ce-doped Lu2SiO5 crystal (Ce:LSO) excited using ultraviolet (UV) light when the scintillator was irradiated with azimuthally polarized laser light in the photon energy range from 1.97 eV (630 nm) to 2.58 eV (480 nm). When the excitation light source changed to synchrotron radiation (SR) light with photon energy of 800 eV, the same STED phenomenon occurred. The spot size of the luminescence was reduced by the STED phenomenon and this spot size decreased as the STED laser’s photon energy increased. The energy dependence of the Ce:LSO luminescence levels can be used to explain the change in the spot size at the luminescence point.

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Section: Sted Light Sourcementioning

confidence: 99%

“…A high-brightness supercontinuum (SC) generator was used as the STED light source for 3.40 eV excitation measurement 16 . The initial pulse was produced using a typical all-normal-dispersion (ANDi) mode-locked fibre oscillator 16,17 . Output pulses were detected using a Pockels cell in a regenerative amplifier (RGA).…”

Section: Sted Light Sourcementioning

confidence: 99%

Demonstration of stimulated emission depletion phenomenon in luminescence of solid-state scintillator excited by soft X-rays

Ejima

Wakayama

Shinozaki

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

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Supercontinuum vector beam generation by independent manipulations of angular polarization and geometric phase

Wakayama

Shinozaki

Motomizu

et al. 2019

Applied Physics Letters

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We propose and demonstrate production of a supercontinuum vector beam by independent manipulations of an angular polarization and a geometric phase. The proposed concept consists of left- and right-hand vortex phase cancelation. Two-dimensional distributions of the angular polarization and the geometric phase in the generated vector beam are evaluated for a rigorous polarization analysis. Their azimuthal angles are linearly changed with matching ratios of more than 90%, as compared to the theoretical calculations. The geometric phase obtained from ellipsometric parameters is also shaped to be a uniform phase at an average of 0.10 rad and to angularly decrease the vortex phase up to −6.73 rad, respectively. Our strategy is sufficient for finding numerous applications, such as super-resolution microscopy, plasmonics, and spectroscopy.

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High Power Visible Supercontinuum Generation Pumped by All Normal Dispersion Picosecond Yb-Doped Fiber Laser

Inoue,

Ogawa,

Kaneda

et al. 2022

2022 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

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Efficient near-infrared supercontinuum beam generation in ytterbium-doped double-clad passive fiber

Cited by 13 publications

References 27 publications

Demonstration of stimulated emission depletion phenomenon in luminescence of solid-state scintillator excited by soft X-rays

Demonstration of stimulated emission depletion phenomenon in luminescence of solid-state scintillator excited by soft X-rays

Supercontinuum vector beam generation by independent manipulations of angular polarization and geometric phase

High Power Visible Supercontinuum Generation Pumped by All Normal Dispersion Picosecond Yb-Doped Fiber Laser

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