论文部分内容阅读
以室温半导体激光器 L D为泵浦光源 ,通过周期性极化的铌酸锂晶体叠加 ,产生了 3.3μm连续差频光 ,使甲烷气体产生本征吸收的光纤传感器 ,实现了对甲烷气体的检测 ,检测灵敏度为 40 0× 10 - 6。具有检测灵敏度高、稳定性好、结构简单及可在线性等特点
The semiconductor laser LD is used as a pump light source and the periodically poled lithium niobate crystals are superimposed to produce a 3.3 μm continuous difference frequency light and an intrinsic absorption of methane gas to realize the detection of methane gas. Detection sensitivity of 40 0 × 10 - 6. With high detection sensitivity, good stability, simple structure and can be linear and so on