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Huangjun Zeng, Wenze Xue, Robert T. Murray, Weidong Chen, Zhongben Pan, Li Wang, Chen Cui, Pavel Loiko, Xavier Mateos, Uwe Griebner and Valentin Petrov
We investigate in-band pumping of a Tm,Ho,Lu:CaGdAlO4 laser using a Raman-shifted Er-fiber laser (1678 nm), in the continuous-wave (CW) and mode-locked (ML) regimes. A maximum output power of 524 mW is obtained in the CW regime with a 5% output coupler a...
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Artem T. Turov, Yuri A. Konstantinov, Fedor L. Barkov, Dmitry A. Korobko, Igor O. Zolotovskii, Cesar A. Lopez-Mercado and Andrei A. Fotiadi
Moving differential and dynamic window moving averaging are simple and well-known signal processing algorithms. However, the most common methods of obtaining sufficient signal-to-noise ratios in distributed acoustic sensing use expensive and precise equi...
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Wenping Guo, Yuan Huang, Chunhua Liu, Zhen Feng, Zhipei Hou, Wenyan Zhai, Hisamichi Funaba, Ichihiro Yamada, Yonggao Li and Zhongbin Shi
The Thomson scattering diagnostic of the HL-2A tokamak device was upgraded to improve its multi-point diagnostic capability, including new collection optics, fibers bundles, and data analysis code. The small old collection lens was replaced by a six-piec...
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Sebastian Valencia-Garzón, Erick Reyes-Vera, Jorge Galvis-Arroyave, Jose P. Montoya and Nelson Gomez-Cardona
A CO2" role="presentation">22
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laser-based system was studied and implemented to produce asymmetric long period fiber gratings (LPFG) with a large attenuation peak, high reproducibility, and high stability. The first half of this study provides a mathe...
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Kwan Kim, Moo-Keun Song, Su-Jin Lee, Dongsig Shin, Jeong Suh and Jong-Do Kim
With nuclear power plants worldwide approaching their design lifespans, plans for decommissioning nuclear power plants are increasing, and interest in decommissioning technology is growing. Laser cutting, which is suitable for high-speed cutting in under...
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