Dhont G, Fontanari D, Bray C, Mouret G, Cuisset A, Hindle F, Hickson K M, Bocquet R
LPCA, Université du Littoral Côte d'Opale, 189A avenue Maurice Schumann, 59140 Dunkerque, France.
ISM, Université de Bordeaux, 351 cours de la libération, 33405 Talence cedex, France.
J Infrared Millim Terahertz Waves. 2020;41(8):1009-1021. doi: 10.1007/s10762-020-00716-z. Epub 2020 Jul 1.
In a chirped pulse experiment, the strength of the signal level is proportional to the amplitude of the electric field, which is weaker in the millimeter-wave or submillimeter-wave region than in the microwave region. Experiments in the millimeter region thus require an optimization of the coupling between the source and the molecular system and a method to estimate the amplitude of the electric field as seen by the molecular system. We have developed an analytical model capable of reproducing the coherent transient signals obtained with a millimeter-wave chirped pulse setup operated in a monochromatic pulse mode. The fit of the model against the experimental data allowed access to the amplitude of the electric field and, as a byproduct, to the molecular relaxation times and .
在啁啾脉冲实验中，信号电平的强度与电场幅度成正比，毫米波或亚毫米波区域的电场比微波区域的电场弱。因此，毫米波区域的实验需要优化源与分子系统之间的耦合，以及一种估计分子系统所看到的电场幅度的方法。我们已经开发了一种分析模型，该模型能够再现用在单色脉冲模式下运行的毫米波啁啾脉冲装置获得的相干瞬态信号。将该模型与实验数据进行拟合，可以得到电场幅度，作为副产品，还可以得到分子弛豫时间和。
