All-optical thermometry using a single multimode fiber endoscope and diamond nanoparticles containing nitrogen vacancy centers

Lisa Ishikawa; Taiichi Shikama; Takayuki Kakuno; Takato Watanabe; Mazin Jouda; Masahiro Hasuo

doi:10.1063/5.0102531

All-optical thermometry using a single multimode fiber endoscope and diamond nanoparticles containing nitrogen vacancy centers

Rev Sci Instrum. 2022 Aug 1;93(8):083705. doi: 10.1063/5.0102531.

Authors

Lisa Ishikawa¹, Taiichi Shikama¹, Takayuki Kakuno¹, Takato Watanabe¹, Mazin Jouda², Masahiro Hasuo¹

Affiliations

¹ Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, Japan.
² Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Karlsruhe, Baden-Württemberg 76131, Germany.

PMID: 36050074
DOI: 10.1063/5.0102531

Abstract

Photoluminescence (PL) spectra from diamond nanoparticles containing negative nitrogen vacancy centers were measured by using a single multimode fiber endoscope combined with a high-sensitivity spectroscopy system. A laser light spot was produced at the distal end of the endoscope and the PL spectra from a temperature-controlled ensemble of diamond nanoparticles were measured. After calibrating the sensitivity and wavelength of the spectroscopy system, the temperature dependence of the zero-phonon line peak wavelength similar to those previously reported was obtained.