superradiation
1. Keywords two -photon absorption;up -convers ion;superradiation;
双光子吸收;上转换;超辐射;
2. Frequency-resolved measurement of the emission from a Eaman free electron laser under superradiation condition by a microwave grating spectrometer are presented.
本文报道了利用微波栅摄谱仪测量在超辐射工作条件下的喇曼自由电子激光器辐射谱的初步结果。