Diffusion of resonance radiation in atomic vapor imaging |
| |
| Institution: | 1. Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India;2. Mass Spectrometry Lab, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India;3. Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India;1. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, ROC;2. Graduate Institute of Electronics Engineering, National Taiwan University, No. 1, Sec 4, Roosevelt Road, Taipei 10617, Taiwan, ROC;3. Department of Electrical Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan;1. College of Chemical and Biological Engineering, Hezhou University, Hezhou 542800, China;2. Department of Chemistry, Payame Noor University, Abhar, Zanjan, Islamic Republic of Iran;3. Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Islamic Republic of Iran |
| |
| Abstract: | The effect of resonance radiation diffusion due to radiation trapping has been studied in an atomic vapor imaging filter. Using a cesium resonance fluorescence imaging monochromator, the spatial distortions due to resonance radiation trapping by Cs atoms in the pumping/imaging region have been investigated. It was found that the spatial distortions were dependent on the number density of the Cs atoms, as well as the irradiance of the signal photons at 852.12 nm (62S1/2→62Po3/2). The pump laser (917.23 nm, 62Po3/2→62D5/2) did not influence the radiation diffusion to the same degree as the signal beam. It is shown that there is a compromise between maximum optical density and spatial resolution. The number density of the Cs resonance fluorescence imaging monochromator was optimized to obtain the highest spatial resolution and signal-to-background ratio. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
