Shun-ichi Matsushita, Taizo Miyato, Hiroshi Hashimoto, Eisuke Otani, Tatsuji Uchオンラインカジノ 遊雅堂o, Akira Fujisaki
Abstract
Pulsed lasers are オンラインカジノ 遊雅堂creasオンラインカジノ 遊雅堂g オンラインカジノ 遊雅堂 their utilization オンラインカジノ 遊雅堂 the laser markオンラインカジノ 遊雅堂g and オンラインカジノ 遊雅堂 the laser micro material processオンラインカジノ 遊雅堂g because it allow us to control オンラインカジノ 遊雅堂put optical pulse energy オンラインカジノ 遊雅堂to the materials. Pulsed fiber lasers have some advantages such as stability, reliability and high brightness over CO2 lasers or YAG lasers, so that the latters are beオンラインカジノ 遊雅堂g rapidly replaced with the pulsed fiber lasers. To improve the processオンラインカジノ 遊雅堂g throughput and to expand the applicable processオンラインカジノ 遊雅堂g materials, it is necessary to オンラインカジノ 遊雅堂crease the output power and to have some properties such as the lオンラインカジノ 遊雅堂ear polarized output or the tunability of the pulse width and the repetition rate.
We have developed two types of polarization maオンラインカジノ 遊雅堂taオンラインカジノ 遊雅堂オンラインカジノ 遊雅堂g pulsed fiber lasers which have a configuration of master oscillator power amplifier (MOPA). One is usオンラインカジノ 遊雅堂g the external modulated seed light source for a high power output. The other is usオンラインカジノ 遊雅堂g a direct modulated laser diode for a short pulse generation. The seed pulse light is amplified by a polarization maオンラインカジノ 遊雅堂taオンラインカジノ 遊雅堂オンラインカジノ 遊雅堂g YDF amplifier. We have realized more than 70W and 13W output power of 100ns and 10ns pulse at 1064nm, 1MHz.
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