Results 1 to 10 of about 67,421 (118)

Cascaded All-Fiber Gas Raman Laser Oscillator in Deuterium-Filled Hollow-Core Photonic Crystal Fibers [PDF]

open access: yesNanomaterials
Hollow-core photonic crystal fibers (HC-PCFs) provide an ideal transmission medium and experimental platform for laser–matter interaction. Here, we report a cascaded all-fiber gas Raman laser based on deuterium (D2)-filled HC-PCFs.
Hao Li   +6 more
doaj   +2 more sources

Time-Gated Pulsed Raman Spectroscopy with NS Laser for Cultural Heritage

open access: yesHeritage, 2023
Raman spectroscopy, a non-destructive reference technique, is used in heritage science to directly identify materials like pigments, minerals, or binding media.
Xueshi Bai, Vincent Detalle
doaj   +1 more source

Micro-Raman spectroscopy of laser induced changes in polycrystalline CuInTe2

open access: yesResults in Optics, 2023
The result of laser irradiation on bulk polycrystalline CuInTe2 was studied using micro-Raman spectroscopy. Chalcopyrite structure was observed for the sample through X-ray diffraction (XRD) analysis.
Ananthan Mevani Raju, M.R. Venkatraman
doaj   +1 more source

Stimulated Raman Microscopy Implemented by Three Femtosecond Laser Sources [PDF]

open access: yesEPJ Web of Conferences, 2021
In this work, the implementation of a femtosecond Stimulated Raman Scattering microscope, equipped with three femtosecond laser sources: a Titanium-Sapphire (Ti:Sa), an optical parametric oscillator (OPO), and a second harmonic generator (SHG); is ...
Ranjan Rajeev   +2 more
doaj   +1 more source

High-power dual-wavelength intracavity diamond Raman laser

open access: yesFunctional Diamond, 2023
Diamond crystals have garnered significant attention for applications in photonics, owing to their characteristics of ultra-high thermal conductivity, extremely broad spectral transmission range, and high Raman gain coefficient. These characteristics are
Hui Chen   +10 more
doaj   +1 more source

Intra-Cavity Raman Laser Operating at 1193 nm Based on Graded-Index Fiber

open access: yesPhotonics, 2022
Nonlinear Raman frequency conversion is an important technical scheme to obtain special optical band lasers based on conventional ion-doped lasers. In our work, we designed an intra-cavity Raman fiber laser based on graded index fiber (GRIF) as the Raman
Chunhua Hu, Ping Sun
doaj   +1 more source

Mid-Infrared Multispectral Gaseous Stimulated Raman Scattering Laser

open access: yesApplied Sciences, 2021
We demonstrated mid-infrared gaseous stimulated Raman scattering lasers in free space. Mixed gases of hydrogen and deuterium were used as Raman gain media in one Raman cell.
Chencheng Shen   +6 more
doaj   +1 more source

Numerical optimization of the extra-cavity diamond Raman laser in the multi-phonon absorption band

open access: yesFrontiers in Physics, 2022
The physical process of stimulated Raman scattering (SRS) in the diamond and the performance of the Raman laser in the multi-phonon absorption band of 2.5–3 μm were theoretically studied.
Zhenhua Shao   +3 more
doaj   +1 more source

Passively Q-Switched KTA Cascaded Raman Laser with 234 and 671 cm−1 Shifts

open access: yesApplied Sciences, 2021
A compact KTA cascaded Raman system driven by a passively Q-switched Nd:YAG/Cr4+:YAG laser at 1064 nm was demonstrated for the first time. The output spectra with different cavity lengths were measured.
Zhi Xie   +7 more
doaj   +1 more source

Widely-tunable, multi-band Raman laser based on dispersion-managed thin-film lithium niobate microring resonators

open access: yesCommunications Physics, 2023
Stimulated Raman scattering is an attractive way to extend the operation spectral range of optical sources. However, the spectral extension range of a tunable Raman laser is limited by the Raman frequency shift and pump tuning bandwidth.
Yanjing Zhao   +4 more
doaj   +1 more source

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