A low-cost time-resolved emission spectrometer optimized for ruby emission is presented. The use of a Class II diode laser module as the excitation source reduces costs and hazards. The design presented here can facilitate the inclusion of time-resolved emission spectroscopy with laser excitation sources in the undergraduate laboratory curriculum. The ruby decay data show evidence of radiation trapping, an interesting optical phenomenon discussed in the research literature.

中文翻译：

---

一种用于研究红宝石排放的低成本时间分辨光谱仪

提出了一种针对红宝石发射优化的低成本时间分辨发射光谱仪。使用II类二极管激光模块作为激发源可降低成本和危害。这里介绍的设计可以促进将时间分辨发射光谱与激光激发源一起纳入本科实验室课程中。红宝石衰变数据显示出辐射被捕获的证据，这是研究文献中讨论的一种有趣的光学现象。