Abstract

Pump-probe microscopy is an emerging nonlinear imaging technique based on high repetition rate lasers and fast intensity modulation. Here, we present new methods for pump-probe microscopy that keep the beam intensity constant and instead modulate the inter-pulse time delay or the relative polarization. These techniques can improve image quality for samples that have poor heat dissipation or long-lived radiative states and can selectively address nonlinear interactions in the sample. We experimentally demonstrate this approach and point out the advantages over conventional intensity modulation.

© 2021 Optical Society of America

Broadband pump-probe spectroscopy at 20-MHz modulation frequency

Fabrizio Preda, Vikas Kumar, Francesco Crisafi, Diana Gisell Figueroa del Valle, Giulio Cerullo, and Dario Polli
Opt. Lett. 41(13) 2970-2973 (2016)

Accurate quantitative phase imaging by the transport of intensity equation: a mixed-transfer-function approach

Linpeng Lu, Yao Fan, Jiasong Sun, Jialing Zhang, Xuejuan Wu, Qian Chen, and Chao Zuo
Opt. Lett. 46(7) 1740-1743 (2021)

Analysis of intensity correlation enhanced plasmonic structured illumination microscopy

Anton Classen, Xinghua Liu, Aleksei M. Zheltikov, and Girish S. Agarwal
Opt. Lett. 46(7) 1554-1557 (2021)

Miniature non-contact photoacoustic probe based on fiber-optic photoacoustic remote sensing microscopy

Jiasheng Zhou, Jingying Zhou, Wei Wang, Siqi Liang, Lili Jing, Shou-Hang Bo, and Sung-Liang Chen
Opt. Lett. 46(22) 5767-5770 (2021)

Differential fluorescence microscopy by using a dynamic cylindrical-vector field

Yanhui Cai, Wei Liu, Wenkai Yang, Jian Xu, Hong Yang, and Kebin Shi
Opt. Lett. 46(10) 2332-2335 (2021)