Abstract

A portable high-sensitivity device for recording weak luminescence signals in the near infrared (NIR) region (900–1100 nm) has been developed for applications in laser oncofluorometry. The device consists of a housing with optical lenses, interference filters, and a high-sensitivity NIR photodiode module with a preamplifier, protection circuit, and power supply. It is shown that the use of interference filters of the SL 930–1100 type can significantly increase the efficiency of the device. The use of a photodiode module unit with a sensitivity peak near 960 nm, which maximally coincides with the luminescence peak of ytterbium porphyrin complexes, ensures the sensitivity of detecting weak luminescence signals at the level of several fW.

中文翻译：

---

用于近红外区荧光法的发光信号检测器

摘要

已开发出一种便携式高灵敏度设备，用于记录近红外（NIR）区域（900-1100 nm）中的弱发光信号，用于激光荧光法中。该设备包括一个带光学透镜的外壳，一个干涉滤光片以及一个带有前置放大器，保护电路和电源的高灵敏度NIR光电二极管模块。结果表明，使用SL 930–1100类型的干扰滤波器可以显着提高设备的效率。使用灵敏度峰值接近960 nm且与nm卟啉配合物的发光峰值最大一致的光电二极管模块单元，可确保在几fW的水平上检测弱发光信号的灵敏度。