Abstract

Without real-state transition, third-harmonic generation (THG) cannot be modulated simply by fluorescence-based methods. However, utilizing the absorption-enhancement property of THG, the modulation of THG intensity has been demonstrated through ground-state depletion (GSD) in this Letter. By suppressing the absorption of materials with GSD, the THG intensity can be reduced due to a decreasing of absorption enhancement. The ability to modulate THG intensity can benefit from applying super-resolution techniques to THG microscopy.

© 2019 Optical Society of America

Stain-free subcellular-resolution astrocyte imaging using third-harmonic generation

M. S. Pochechuev, A. A. Lanin, I. V. Kelmanson, D. S. Bilan, D. A. Kotova, A. S. Chebotarev, V. Tarabykin, A. B. Fedotov, V. V. Belousov, and A. M. Zheltikov
Opt. Lett. 44(12) 3166-3169 (2019)

Realizing high-efficiency third harmonic generation via accidental bound states in the continuum

Wenjie Tang, Qiming Zhao, Ziyu Wang, Yajun Gao, Jie He, Yi Zhu, Shuxian Wang, Haohai Yu, Ruwen Peng, and Mu Wang
Opt. Lett. 49(5) 1169-1172 (2024)

Enhanced UV third-harmonic generation in microfibers by controlling nonlinear phase modulations

Xiujuan Jiang, Timothy Lee, Mengmeng Chen, Qi Sun, Jing He, and Gilberto Brambilla
Opt. Lett. 44(17) 4191-4194 (2019)

Investigation of structural mechanisms of laser-written waveguide formation through third-harmonic microscopy

Jun Guan, Xiang Liu, and Martin J. Booth
Opt. Lett. 44(4) 1039-1042 (2019)

Dynamically manipulating third-harmonic generation of phase change material with gap-plasmon resonators

H. L. Liu, Zhang Zhibo, Shang Zhenchen, Gao Tian, and Wu Xijun
Opt. Lett. 44(20) 5053-5056 (2019)