Abstract
We present a versatile approach for mid-infrared spectroscopy through the flexible control of a difference-frequency-generation (DFG) process by femtosecond (fs) pulse shaping and spectral focusing. Based on a broadband sub-10-fs oscillator, the spectral position and spectral resolution can be independently selected within the molecular fingerprint region of more than . A spectral resolution better than can be achieved, which depends solely on the pulse shaper configuration. An absorption experiment on a polystyrene reference sample finally validates the concept and opens the door for an additional modality in nonlinear multimodal microscopy setups.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Azhad U. Chowdhury, Fangjie Liu, Brianna R. Watson, Rana Ashkar, John Katsaras, C. Patrick Collier, Daniel A. Lutterman, Ying-Zhong Ma, Tessa R. Calhoun, and Benjamin Doughty
Opt. Lett. 43(9) 2038-2041 (2018)
Jean Rehbinder, Lukas Brückner, Alexander Wipfler, Tiago Buckup, and Marcus Motzkus
Opt. Express 22(23) 28790-28797 (2014)
Niklas Müller, Florian Nicolai, and Tiago Buckup
Opt. Lett. 46(19) 5012-5015 (2021)