Frequency combs enable rapid and high-resolution multidimensional coherent spectroscopy
Abstract
Dual-comb spectroscopy relies on a pair of laser pulses with multiple frequencies distributed like tines in a comb. It is a rapid means of characterizing atoms and molecules in fine detail, but, when applied to complex mixtures, it can produce a sea of peaks that are hard to discriminate. Lomsadze and Cundiff present a protocol to extend dual comb spectroscopy into the nonlinear regime. The cross-peaks that appear in the resulting two-dimensional spectra allow assignment of crowded features to common sources, as demonstrated for an isotopic mixture of 87 Rb and 85 Rb.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 29, 2017
- Source ID
- 10.1126/science.aao1090
Entities
People
- Bachana Lomsadze
- Steven Cundiff
Organizations
- Intelligence Advanced Research Projects Activity
- University of Michigan