Without cooling the gain medium in liquid nitrogen or using gratings and complex, expensive devices, this fiber laser has the advantages of being simple and easily attainable at a low cost.
这种装置无需将增益介质放在液氮中，也不需要多个光栅选频或其他复杂而昂贵的器件，具有结构简单，易实现和成本低等优点。
Without cooling the gain medium in liquid nitrogen or using gratings and complex, expensive devices, this fiber laser has the advantages of being simple and easily attainable at a low cost.
这种装置无需将增益介质放在液氮中，也不需要多个光栅选频或其他复杂而昂贵的器件，具有结构简单，易实现和成本低等优点。
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