相关实验视频
Updated: Jul 9, 2025

11:56
Fluorescence Imaging with One-nanometer Accuracy FIONA
Published on: September 26, 2014
17.7K
中红外超级镜的精度超过400,000
Gar-Wing Truong1, Lukas W Perner2,3, D Michelle Bailey4
1Thorlabs Crystalline Solutions, 114 E Haley St., Suite G, Santa Barbara, CA, 93101, USA. garwing@thorlabs.com.
Nature communications
|December 6, 2023
概括
研究人员使用单晶干扰涂层开发了新的中红外镜 (MIR). 这些镜子实现了高精度和低光学损失,推进了微量气体传感和精密光谱应用.
科学领域:
- 光学是什么?光学是什么?光学是什么?
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
背景情况:
- 带有低损失镜的光学腔对于提高微量气体传感和精密光谱中的路径长度和强度至关重要.
- 对于可见和近红外 (NIR) 区域,存在高性能镜子,其损耗低于每百万分之2 (ppm) 和空洞精度超过100万.
- 在中红外 (MIR) 光谱区域,尽管存在重大科学兴趣,但类似的进展是有限的.
研究的目的:
- 为了证明高性能中红外镜 (MIR) 的突破.
- 为了实现MIR光谱和传感应用的增强光学腔.
- 报告新型基板转移单晶干扰涂层的情况.
主要方法:
- 用于MIR应用的基板转移单晶干扰涂层的制造.
- 镜子性能的表征,包括光学损失 (散射和吸收) 和空洞细度.
- 在线腔环下光谱仪中进行概念验证演示.
主要成果:
- 达到了空洞细致度值,范围从20万到40万在4.5微米附近.
- 报告过多的光学损失 (散射和吸收) 低于5 ppm.
- 通过空腔长度规范的线性腔环向下的光谱仪证明了最低的噪声等效吸收.
结论:
- 开发的MIR镜子代表了光学涂层技术的重大进步.
- 这些高性能MIR镜子将使各种科学和工业领域的应用范围更广泛.
- 潜在的应用包括大气科学,环境监测,排放检测,工艺气体分析和生物燃料/塑料验证.
相关概念视频
IR Spectrometers
1.2K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.2K
Super-resolution Fluorescence Microscopy
7.0K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
7.0K
Imaging Biological Samples with Optical Microscopy
4.8K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
4.8K
Total Internal Reflection Fluorescence Microscopy
5.8K
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
5.8K

