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利用自行设计的电子反馈控制线路 ,将半导体激光器频率作线性调谐 ,使激光频率能连续调谐达 6 0GHz而不发生跳模 (modehopping)。利用这种线路量取的锂2S 2P 谱线 (6 70 8nm) ,连超精细结构 (HFS)都能看见。
Using the self-designed electronic feedback control circuit, the semiconductor laser frequency is linearly tuned so that the laser frequency can be continuously tuned to 60 GHz without modehopping. Lithium 2S 2P spectra (6 70 8 nm) taken with this line can be seen even with HFS.