25,361 research outputs found
Temperature Dependent Characteristics of L-band EDFA Using Phosphorus- and High-Aluminum Co-doped Silica Fibers
No full textThis dataset supports the publication:
Ziwei Zhai, Arindam Halder, Yu Wang, Martin Nunez Velazquez, Jayanta Sahu. (2022) Temperature Dependent Characteristics of L-band EDFA Using Phosphorus- and High Aluminum- Co-doped Silica Fibers, presented at Optical Fiber Communication Conference (OFC) 2022, 6–10 March 2022, San Diego, California, United States</span
Document by Martin de Ramayn (escribano) concerning the interrogation of Gutierrez Velazquez on the administration of Viceroy Antonio de Mendoza.
No full textDocument by Martin de Ramayn (escribano) concerning the interrogation of Gutierrez Velazquez on the administration of Viceroy Antonio de Mendoza
Dataset for 'Study on dopant concentration ratio in thulium-holmium doped silica fibers for lasing at 2.1µm'
No full textData supports the paper:
Norberto J. Ramirez-Martinez, M. Nunez-Velazquez, and J. K. Sahu
Study on dopant concentration ratio in thulium-holmium doped silica fibers for lasing at 2.1µm
Optics Express https://doi.org/10.1364/OE.397855
We present the fabrication and laser performance of thulium-holmium co-doped silica fibers when cladding pumped at ~790 nm. By using the hybrid gas phase-solution doping process in conjunction with the MCVD preform fabrication technique, the doping concentration and the Tm:Ho ratio were varied to study the energy transfer efficiency from Tm3+ to Ho3+. Our study indicates that for a thulium concentration that has resulted in an efficient two-for-one cross relaxation process with 790 nm pumping, and while maintaining a Tm:Ho concentration ratio in the range ~ 10 to 20, the energy transfer efficiency has reached above 75%. In a free-running laser cavity, the pump power limited laser output of 38W with a slope efficiency of 56% at 2.1 microns is demonstrated.</span
Jack Alive / Martin Dead : The Location of the "Author" in Jack London\u27s Martin Eden
No full textThis essay is an attempt to read Martin Eden, Jack Londonʼs autobiographical novel, in terms of the inextricable relationship between the author and the protagonist. Critics have often taken the unbalanced plot and the lack of ironic distance between narrator and character in Martin Eden as the technical weakness of London, but this paper argues that the achievement of this novel owes a great deal to the attachment of London to Martin. The unbalanced structure is a necessary product of the severe struggle of the author to kill his romantic alter ego. // Martin, who aspires to win Ruth Morse, tries to cross class boundaries by making a career of a writer. Even after realizing the emptiness of Ruth, who turns out to be nothing but a typical figure of the bourgeoisie, he somehow persists in loving her. The notion underlying here is that, for Martin, love, career and art are fundamentally inseparable. He objects to the aestheteʼs view of Brissenden on account of his separation of art from career. Martinʼs identity and life consist only in the triunity of love/career/art; the alternative is the repudiation of life. Thus, the unnatural delay of his disappointment in love can be regarded as Londonʼs strategy to set the suicide of Martin as the necessary consequence of the story. // By finishing the story and killing Martin, London finally detaches himself from Martin, reconstructs his self, and, unlike Martin, survives as a professional writer. In this sense, Martin Eden is a story about “writerʼs self-reconstruction.
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Letter from Martin Chizzick
No full textCongratulations to Duane Pearsall for receiving the Enterpreneur of the Year award; note on the letter was written by Pearsall and it mentions that Martin, the author of the letter, died in a airplane accident
Robert Martin Tiffin's Mystery Man Newspaper Articles
No full textAdvertiser-Tribune newspaper clippings featuring a story about Robert Martin (written by Nancy Kleinhenz), a local author from Tiffin (Ohio) who wrote under the pseudonym of Lee Roberts, and two of his short stories. Martin wrote mystery novels in his spare time, creating more than 22 mystery novels. For more information about Robert Martin and a list of books go to http://www.mysteryfile.com/RMartin/JBennett.html
Dataset 'Temperature-Dependent Study on L-Band EDFA Characteristics Pumped at 980 nm and 1480 nm in Phosphorus and Aluminum-Rich Erbium-Doped Silica Fibers'
No full textThis dataset supports the journal article 'Temperature-Dependent Study on L-Band EDFA Characteristics Pumped at 980 nm and 1480 nm in Phosphorus and Aluminum-Rich Erbium-Doped Silica Fibers' Published in the Journal of Lightwave Technology
The excel file contains all experimental data used for generating Fig.1, Fig.3, Fig.4 and Fig.5</span
3D printed Er-doped silica fibre by Direct Ink Writing
No full text3D printed preform by DIW was used to produce an Er-doped silica fibre fabricated. The fabrication method and optical features of the doped fibre are reported. Its absorption of 62.98dB/m at 980nm and 151.49dB/m at 1535nm and lifetime with a pulse width of 10ms are consistent to a Er-dope fibre produce in a conventional fabrication process.
This data supports the paper '3D printed Er-doped silica fibre by Direct Ink Writing' presented at the 9th EPS-QEOD Europhotonic Virtual Conference that took place 30th August-4th Sepetember 2020</span
Dataset for Femtosecond Inscription And Thermal Testing Of Bragg Gratings In High Concentration Germania-Doped Optical Fibre
No full textDataset supports: Femtosecond Inscription And Thermal Testing Of Bragg Gratings In High Concentration Germania-Doped Optical Fibre paper by Andrei Donko.
The file holds data for the transmission spectra recorded at room temperature for the Bragg grating inscribed in the high concentration germanium fibre. In addition it contains all the data for the transmission spectra recorded for all the thermal tests up to 850 degrees C.</span
Magnetization Dynamics in Two Novel Current-Driven Spintronic Memory Cell Structures
No full textIn this work, two new spintronic memory cell structures are proposed. The first cell uses the diffusion of polarized spins into ferromagnets with perpendicular anisotropy to tilt their magnetization followed by their dipolar coupling to a fixed magnet (Bhowmik et al., 2014). The possibility of setting the magnetization to both stable magnetization states in a controlled manner using a similar concept remains unknown, but the proposed structure poses to be a solution to this difficulty. The second cell proposed takes advantage of the multiple stable magnetic states that exist in ferromagnets with configurational anisotropy and also uses spin torques to manipulate its magnetization. It utilizes a square-shaped ferromagnet whose stable magnetization has preferred directions along the diagonals of the square, giving four stable magnetic states allowing to use the structure as a multi-bit memory cell. Both devices use spin currents generated in heavy metals by the Spin Hall effect present in these materials. Among the advantages of the structures proposed are their inherent non-volatility and the fact that there is no need for applying external magnetic fields during their operation, which drastically improves the energy efficiency of the devices.
Computational simulations using the Object Oriented Micromagnetic Framework (OOMMF) software package were performed to study the dynamics of the magnetization process in both structures and predict their behavior.
Besides, we fabricated a 4-terminal memory cell with configurational anisotropy similar to the device proposed, and found four stable resistive states on the structure, proving the feasibility of this technology for implementation of high-density, non-volatile memory cells
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