Burst-mode dual-comb spectroscopy
Abstract
We introduce a new, to the best of our knowledge, modality of dual-comb spectroscopy (DCS) that enables a simplified and powerful new approach for time-resolved measurements with increased acquisition rates. This “burst mode” form of DCS relies on the multiplexing of each probe pulse into a short train of pulses. With this approach we demonstrate a time-resolved series of absorption-based spectroscopic measurements of a laser-induced plasma using only a single laser ablation shot and identify 22 Nd lines not previously reported in the literature. The transmission spectra spanned 3.1 THz and were acquired at an effective acquisition rate of 25 kHz with 40 µs time resolution. This simple modification to ∼ 100 M H z level dual-comb systems provides a flexible approach for studying transient and low-duty-cycle events such as laser-induced plasmas, combustion, and explosive reactions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 10, 2021
- Source ID
- 10.1364/ol.416668
Entities
People
- Caroline Lecaplain
- Jeremy Yeak
- Mark C. Phillips
- R. Jason Jones
- Reagan R. D. Weeks
- S. S. Harilal
- Yu Zhang
Organizations
- Air Force Office of Scientific Research
- Defense Threat Reduction Agency
- National Nuclear Security Administration
- Office of Defense Nuclear Nonproliferation
- United States Department of Energy