By using a laser cavity which consists of only two gratings and a resonant reflector, a N2-laser-pumped dye laser with a spectral linewidth of 1.3 GHz has been made.

利用仅由两个光栅和一个共振反射器组成的激光腔，就能得到线宽为1.3千兆赫的由N_2激光泵浦的染料激光。

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The characteristics of distributed Bragg reflector (DBR) cavity are analyzed. A narrow-linewidth single-frequency ytterbium-doped fiber DBR laser is fabricated.

对分布布拉格反射(DBR)的透射特性进行了分析，制作了一个单频窄线宽掺镱光纤dbr激光器。

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