连续波发生器的SPASER(Surface Plasmon Amplification by Stimulated Emission of Radiation)相当于净放大等于零,不能作为放大器使用,文中采用改进的MIM波导结构实现SPASER作为放大器可能性。利用汉密尔顿函数的理论模型得到了放大器激射条件,数值计算表明:采用改进的MIM波导结构实现解决SPASER的内反馈问题和消除SP的净增益问题是可行的;改进结构在不到100 fs的时间里实现了SP激子数的稳定水平;改进SPASER放大器响应时间为100 fs,带宽为1.5~2 THz,SP的放大增益在30~60 dB范围。上述研究成果将为大规模集成光子学芯片设计提供了理论和技术基础。 The continuous wave generator SPASER (Surface Plasmon Amplification by Stimulated Emission of Radiation) is equivalent to a net gain equal to zero, can not be used as an amplifier, the article uses an improved MIM waveguide structure SPASER amplifier as a possibility. The theoretical model of Hamiltonian function was used to obtain the condition of laser lasing. The numerical results show that it is feasible to solve the internal feedback problem of SPASER and eliminate the net gain of SP by using the improved MIM waveguide structure. It is feasible to improve the structure in less than 100 fs The stabilization level of SP exciton is realized. The improved SPASER amplifier response time is 100 fs and the bandwidth is 1.5-2 THz. The gain of SP is in the range of 30-60 dB. The above research results will provide the theoretical and technical basis for large-scale integrated photonic chip design.