光子上转换
红外线的
激发波长
材料科学
激发
波长
光学
Crystal(编程语言)
光电子学
对偶(语法数字)
物理
兴奋剂
艺术
计算机科学
文学类
量子力学
程序设计语言
作者
Yugo Akabe,Keito Shinohara,Marilou Cadatal‐Raduban,Akira Yoshikawa,Toshihiko Shimizu,Kosaku Kato,Verdad C. Agulto,Makoto Nakajima,Nobuhiko Sarukura,B. Damdee,J. Kaewkhao,Osamu Komeda,Hitoshi Suto,Kohei Yamanoi
出处
期刊:Optics Letters
[The Optical Society]
日期:2024-07-12
卷期号:49 (14): 3998-3998
摘要
We propose a system for imaging 1510 nm near-infrared (NIR) wavelength via upconversion (UC) luminescence in an Er 3+ -doped CaF 2 crystal. Er 3+ ions are excited from the ground to the excited state levels by an 800-nm pre-excitation wavelength, followed by the promotion of these ions to a higher energy level by the NIR excitation wavelength. Relaxation of these excited ions gives rise to 540 nm UC luminescence in the visible region, enabling the detection of the 1510 nm NIR wavelength. Using this UC scheme, 1510 nm was successfully imaged. Our system enables imaging of NIR wavelengths using low-cost optics and readily available Si-based detectors that are sensitive only to visible wavelengths, opening new possibilities for detection and imaging of NIR wavelengths.
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