A 100 W-class all-fiber linearly-polarized single-mode fiber laser at 1120 nm with an optical pump efficiency of 50% was demonstrated. Linearly polarized output with a polarization extinction ratio of 15 dB is achieved by a cavity that selects both wavelength and polarization. Macro pulse operations with square shaped pulses from 100 μs to 1 ms are achieved without relaxation oscillation. The exact wavelength of pump diode is found to be crucial for amplified spontaneous emission and parasitic oscillation in high power 1120 nm fiber laser. Effects of inhomogeneous spectral broadening and temperature dependent absorption are proposed to explain experimental observations.
Network tutoring system is currently a popular research subject in the world. And with the development of artificial
intelligence technology, the intelligent tutoring strategy theory has been improved a lot. This paper makes use of the
theory of multi-agent plan to develop the model of network tutoring strategic decision-making system, and improves the
efficiency of the decision-making system and the continuity of the system to make decisions by the multi-agent plan. It
also coordinates and improves the dynamic timeliness of the decision-making system by the multi-agent, and ensures the
decision-making system to obtain the best results in the overall situation.