As the teacher of Chinese culture,Mr Zhang Tai-Yan’s ideas is broad and deep. The article choose the most important period from his lifetime:The brief comment on ideas during the year from 1900 to 1908. The impersona...As the teacher of Chinese culture,Mr Zhang Tai-Yan’s ideas is broad and deep. The article choose the most important period from his lifetime:The brief comment on ideas during the year from 1900 to 1908. The impersonality and justness review on Mr Zhang Tai-Yan’s lifetime from three ways: politics?politics ideas?philosophy ideas.展开更多
In this paper, we report that a diode-pumped thulium-doped double clad silica fiber laser can provide powers of up to 227 W at 1908 nm, corresponding to a slope efficiency of 54.3%, and an optical-to-optical efficienc...In this paper, we report that a diode-pumped thulium-doped double clad silica fiber laser can provide powers of up to 227 W at 1908 nm, corresponding to a slope efficiency of 54.3%, and an optical-to-optical efficiency of 51.2%. The output power, to the best of our knowledge, is the highest output at 1908 nm. The beam quality M2 factor is about 1.56. Also discussed in this paper is the dependence of the laser performance on fiber length.展开更多
文摘As the teacher of Chinese culture,Mr Zhang Tai-Yan’s ideas is broad and deep. The article choose the most important period from his lifetime:The brief comment on ideas during the year from 1900 to 1908. The impersonality and justness review on Mr Zhang Tai-Yan’s lifetime from three ways: politics?politics ideas?philosophy ideas.
文摘In this paper, we report that a diode-pumped thulium-doped double clad silica fiber laser can provide powers of up to 227 W at 1908 nm, corresponding to a slope efficiency of 54.3%, and an optical-to-optical efficiency of 51.2%. The output power, to the best of our knowledge, is the highest output at 1908 nm. The beam quality M2 factor is about 1.56. Also discussed in this paper is the dependence of the laser performance on fiber length.
