Reference-free dual-comb spectroscopy with inbuilt coherence.
Opt Lett
; 49(9): 2473-2476, 2024 May 01.
Article
in En
| MEDLINE
| ID: mdl-38691747
ABSTRACT
We demonstrate a simple system for dual-comb spectroscopy based on two inherently coherent optical frequency combs generated via seeded parametric downconversion. The inbuilt coherence is established by making the two combs share a common comb line. We show that the inbuilt coherence makes it possible to use a simple numerical post-processing procedure to compensate for small drifts of the dual-comb interferogram arrival time and phase. This enables long-time coherent averaging of the interferograms.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Lett
Year:
2024
Document type:
Article
Country of publication:
United States