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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Characteristics of an all gas-phase iodine laser using molecular iodine as atomic iodine donor
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Characteristics of an all gas-phase iodine laser using molecular iodine as atomic iodine donor

机译：以分子碘为原子碘供体的全气相碘激光器的特性

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摘要

The laser action of an all gas-phase iodine laser (AGIL), which uses molecular iodine as a source of iodine atoms, has been demonstrated. The laser is based on the energy transfer reaction between metastable NCl(a ~1 Δ) and ground state I(~2P_(3/2)) atoms, which are produced by the electric discharge of a mixture of I_2 and He. At fixed flow rates of the chemical species, the laser output powers are measured at three different positions in a flow reactor. The output power is characterized by a function of the optical axis position and is in reasonable agreement with the numerical simulation. A repetitive pulse of laser output at 50 Hz with a duty factor of 40% is observed. The highest output power is 40 mW at 210 mm downstream from the mixing point of I/H/He and NCl_3. This is 80% of the output power generated from the conventional system using HI as an iodine donor. The measured results of the time-resolved laser output power suggest that the output power of the I_2-AGIL is more sensitive to the electric discharge plasma intensity as compared with that of the HI-AGIL. An AGIL operated using I_2 could potentially have the same output power as that of an AGIL operated using HI if a continuous-wave electric discharge generator is used.
机译：已经证明了使用分子碘作为碘原子源的全气相碘激光器（AGIL）的激光作用。激光基于亚稳态NCl（a〜1Δ）与基态I（〜2P_（3/2））原子之间的能量转移反应，这些原子是由I_2和He的混合物放电产生的。在化学物质的固定流速下，在流动反应器的三个不同位置测量激光输出功率。输出功率的特征在于光轴位置的函数，并且与数值模拟合理地吻合。观察到50 Hz占空比为40％的激光输出重复脉冲。在I / H / He和NCl_3的混合点下游210毫米处，最高输出功率为40 mW。这是使用HI作为碘供体的常规系统产生的输出功率的80％。时间分辨的激光输出功率的测量结果表明，与HI-AGIL相比，I_2-AGIL的输出功率对放电等离子体强度更为敏感。如果使用连续波放电发生器，则使用I_2操作的AGIL可能与使用HI操作的AGIL具有相同的输出功率。

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