硕士生李雪娇参加国际会议回国报告

汇报题目：Study on the Enhancement of Diamond Fluorescence Characteristics by Multi-layer Anti-reflection Coating

汇报时间：2019年6月25日（星期二） 19:00

汇报地点：兴庆校区出版大厦 第一会议室

汇报人：李雪娇

会议名称：2019 The 41st PIERS, PhotonIcs & Electromagnetics Research Symposium

会议时间：17-20 June 2019

会议地点：Rome, Italy

会议简介：

PIERS系列会议又称电磁学研究进展研讨会，是由美国电磁科学院主办，为报道现代电磁学、光子学的应用领域的进展和最新进展提供了一个国际论坛，在电磁学、光子学领域具有高水平的重要学术会议。该会议旨在汇集各国研究人员，对电磁学、光子学领域进行专题讨论，相互沟通交流，推动最新的研究成果的共享，从而促进科研和技术领域的新发展。

PIERS 2019于2019年6月17日至20日在意大利罗马举行。在本次会议上征求和期待领域最新研究成果：主题包括电磁理论、光子学、等离子体学、超材料、天线、微波技术、计算电磁学、电磁兼容性、散射、遥感、雷达、辐射测量学、成像、辐射传输、反演问题、量子电动力学、量子光学、材料效应。

会议交流工作

Poster presentation: Study on the Enhancement of Diamond Fluorescence Characteristics by Multi-layer Anti-reflection Coating

汇报人：李雪娇

参加论文信息

Title: Study on the Enhancement of Diamond Fluorescence Characteristics by Multi-layer Anti-reflection Coating

Author: Xuejiao Li; Libo Zhao; Zhikang Li; et al.

Abstract: Quantum sensing has become a rapidly growing research within the area of sensor, which can break through the limits of traditional physical sensing and make sensing accuracy to the nanometer scale. Meanwhile nitrogen-vacancy (NV) center in bulk diamond as a sensor has varieties of applications because of its excellent characteristics. However, there are large optical reflection and low fluorescence collection efficiency at the diamond-air interface because of the large refractive index gap between diamond and air, thereby reducing the sensing sensitivity. In this work, we report a multi-layer anti-reflection coating and fabrication on the surface of diamond with genetic algorithm to solve optimization value of the average reflectance R_ave in the wavelength range of 600-800nm. And we fabricate SiO₂-Si₃N₄ double-layer anti-reflection coating on diamond substrate by plasma chemical vapor deposition. Experiment results show that with an anti-reflection coating, the fluorescence collection efficiency is significantly improved, and the average transmittance in the wavelength range of 600-800nm is increased from 82.8% to 96.7%.