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| 常温常压下碘蒸气的简并四波混频光谱技术 | |
| 引用本文： | 王维波,陈德应,樊荣伟,杨军. 常温常压下碘蒸气的简并四波混频光谱技术[J]. 中国激光, 2008, 35(s1): 95-97 |
| 作者姓名： | 王维波 陈德应 樊荣伟 杨军 |
| 作者单位： | 王维波:哈尔滨工业大学光电子所, 黑龙江 哈尔滨 150001哈尔滨师范大学物理系, 黑龙江 哈尔滨 150080 陈德应:哈尔滨工业大学光电子所, 黑龙江 哈尔滨 150001 樊荣伟:哈尔滨工业大学光电子所, 黑龙江 哈尔滨 150001 杨军:哈尔滨工业大学光电子所, 黑龙江 哈尔滨 150001 |
| 基金项目： | 黑龙江省科技攻关资助课题。 |
| 摘 要： | 报道了以碘蒸气为介质进行的前向简并四波混频(DFWM)布局光谱技术的试验研究。在试验中采用了具有自稳分光系统的前向简并四波混频布局。试验发现在常温常压条件下,由于碰撞猝灭会大大降低激光诱导荧光(LIF)光谱的检测灵敏度,几乎观察不到碘蒸气荧光光谱,但却可获得较强的碘蒸气的简并四波混频信号。这是目前已知测定了常温常压下I2在554～556 nm中的前向简并四波混频光谱。常温常压下气相介质的简并四波混频光谱技术,对痕迹量原子、分子和自由基的探测以及对燃烧诊断等方面的研究与应用具有重要意义。 |
| 关 键 词： | 非线性光学 非线性激光光谱 简并四波混频光谱 碘蒸气 |
Degenerate Four-Wave Mixing for Iodine Vapor under the Condition of Normal Atmosphere and Room Temperature |
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| Abstract: | Forward degenerate four-wave mixing (DFWM) by using self-stability spilt-beam system has been demonstrated in iodine vapor. It is found that there is no laser-induced fluorescence (LIF) existing because of collision quenching at atmospheric pressure and room temperature, however strong DFWM spectroscopy of iodine vapor can be obtained. DFWM spectrum (554～556 nm) of iodine vapor has been measured by forward geometry of DFWM at atmospheric pressure and room temperature. This technique without suffering severe quenching problems at atmospheric pressure and room temperature is of importance to trace atom, molecular and radical in combustion diagnosis. |
| Keywords: | nonlinear optics nonlinear laser spectroscopy degenerate four-wave mixing spectroscopy iodine vapor |