Ultra-broadband dual-comb spectroscopy across 1.0–1.9 µm

By S. Okubo, K. Iwakuni, H. Inaba, K. Hosaka, A. Onae, H. Sasada, F. Hong. 2015

140 citations recorded by the source corpus.

We have carried out dual-comb spectroscopy and observed in a simultaneous acquisition a 140-THz-wide spectrum from 1.0 to 1.9 µm using two fiber-based frequency combs phase-locked to each other. This ultrabroad-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 C2H2, CH4, and H2O at different wavelengths across the whole spectrum. The determined transition frequencies of C2H2 agree with those from the previous sub-Doppler resolution measurement of individual lines using CW lasers within 2 MHz.

Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/c296d06c88ab2e2f6c0776004aa22d967a91c612

Citations in the corpus

• Dual-comb spectroscopy (2016, unknown): “have shown that DCS is possible over an even broader spectrum covering 140 THz or almost the entire 1–2 μm supercontinuum span of Er fiber frequency combs [50].”