Abstract

Two-photon charge state conversion has been utilized to improve the spatial resolution of the sensing and imaging with the nitrogen vacancy (NV) center in diamonds. Here, we studied the charge state conversion of the NV center under picosecond pulsed laser excitation. With the same average power, the charge state conversion rate can be improved approximately 24 times by reducing the repetition rate of the laser pulse from 80 to 1 MHz. Subsequently, a pulsed laser with a low repetition rate was applied for the super-resolution charge state depletion microscopy of the NV center. The average power of the depletion laser was reduced approximately 5 times. It can decrease the optical heating, which affects the accuracy and sensitivity of sensing. With the assistance of an additional near-infrared laser, a resolution of 12 nm was obtained with 1 mW depletion laser power. Combined with spin manipulation, we expect our results can be used for the development of a diffraction-unlimited NV center sensing.

© 2020 Optical Society of America

Charge state depletion nanoscopy with a nitrogen-vacancy center in nanodiamonds

Qi-Yu Wang, Ze-Hao Wang, Bo Du, Xiang-Dong Chen, Guang-Can Guo, and Fang-Wen Sun
Opt. Lett. 47(1) 66-69 (2022)

High-resolution multiphoton microscopy with a low-power continuous wave laser pump

Xiang-Dong Chen, Shen Li, Bo Du, Yang Dong, Ze-Hao Wang, Guang-Can Guo, and Fang-Wen Sun
Opt. Lett. 43(4) 699-702 (2018)

Fluorescence modulation of the nitrogen-vacancy center with competition between charge-state conversion and stimulated emission

Bo Du, Xiang-Dong Chen, Shao-Chun Zhang, Yang Dong, Cui-Hong Li, Guang-Can Guo, and Fang-Wen Sun
J. Opt. Soc. Am. B 37(5) 1468-1473 (2020)

Background-free two-photon fluorescence readout via a three-photon charge-state modulation of nitrogen-vacancy centers in diamond

I. V. Fedotov and A. M. Zheltikov
Opt. Lett. 44(15) 3737-3740 (2019)

Stimulated fluorescence quenching in nitrogen–vacancy centers of diamond: temperature effects

S. M. Blakley, A. B. Fedotov, J. Becker, N. Altangerel, I. V. Fedotov, P. Hemmer, M. O. Scully, and A. M. Zheltikov
Opt. Lett. 41(9) 2077-2080 (2016)