Ultra-broadband dual-comb spectroscopy across 1.0-1.9 {\mu}m
Optics
2015-07-30 v1
Abstract
We have carried out dual-comb spectroscopy and observed in a simultaneous acquisition a 140-THz-wide spectrum from 1.0 to 1.9 {\mu}m using two fiber-based frequency combs phase-locked to each other. This ultra-broad wavelength bandwidth is realized by setting the difference between the repetition rates of the two combs to 7.6 Hz using the sub-Hz-linewidth fiber combs. The recorded spectrum contains five vibration-rotation bands of CH, CH, and HO at different wavelengths across the whole spectrum. The determined transition frequencies of CH agree with those from the previous sub-Doppler resolution measurement of individual lines using CW lasers within 2 MHz.
Keywords
Cite
@article{arxiv.1507.08006,
title = {Ultra-broadband dual-comb spectroscopy across 1.0-1.9 {\mu}m},
author = {Sho Okubo and Kana Iwakuni and Hajime Inaba and Kazumoto Hosaka and Atsushi Onae and Hiroyuki Sasada and Feng-Lei Hong},
journal= {arXiv preprint arXiv:1507.08006},
year = {2015}
}
Comments
13 pages, 4 figures, 1 table