Abstract
Quantitative characterization of dispersion near molecular resonances is difficult both conceptually and technically, as it requires systematic measurements of rapidly varying dispersion profiles across the edges of molecular absorption bands. Here, we show that this challenge can be confronted with an ultrafast spectrochronography technique that combines time-resolved four-wave mixing and cross-correlation frequency-resolved optical gating. We demonstrate that, with the spectrum of an ultrashort mid-infrared laser probe stretching across the edge of a molecular absorption band, the Wigner chronocyclic maps of such a probe reveal universal signatures of anomalous dispersion and help quantify such dispersion anomalies.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
A. A. Voronin and A. M. Zheltikov
Opt. Lett. 44(12) 3170-3173 (2019)
Abijith S. Kowligy, Daniel D. Hickstein, Alex Lind, David R. Carlson, Henry Timmers, Nima Nader, Daniel L. Maser, Daron Westly, Kartik Srinivasan, Scott B. Papp, and Scott A. Diddams
Opt. Lett. 43(17) 4220-4223 (2018)
Drake R. Austin, Kyle R. P. Kafka, Yu Hang Lai, Zhou Wang, Cosmin I. Blaga, and Enam A. Chowdhury
Opt. Lett. 43(15) 3702-3705 (2018)