Fluorescence collection method and device

The invention is suitable for the technical field of diamond color center quantum sensing technology, and provides a fluorescence collection method and device, and the method comprises the steps: obtaining a parabolic lens and a diamond NV with a preset size, processing the middle part of the upper surface of the parabolic lens, and obtaining a parabolic lens groove with the same size as the diamond NV with the preset size; the diamond NV of the preset size is put into the parabolic lens groove, and the upper surfaces of the diamond NV of the preset size and the parabolic lens are evaporated with dichroic filtering coatings; fluorescence is collected based on a parabolic lens and a diamond NV of a preset size. The fluorescence collection efficiency of the diamond NV is improved. 本申请适用于金刚石色心量子传感技术技术领域，提供了荧光收集方法及装置，该荧光收集方法包括：获取抛物面透镜和预设尺寸的金刚石NV，加工抛物面透镜上表面中部，得到与预设尺寸的金刚石NV大小相同的抛物面透镜凹槽；将预设尺寸的金刚石NV放入抛物面透镜凹槽，并向预设尺寸的金刚石NV和抛物面透镜的上表面蒸镀二向色滤光镀层；基于抛物面透镜及预设尺寸的金刚石NV收集荧光。本申请提高了金刚石NV的荧光收集效率。