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

Sho Okubo, Kana Iwakuni, Hajime Inaba, Kazumoto Hosaka, Atsushi Onae, Hiroyuki Sasada, Feng Lei Hong

研究成果: Article査読

135 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号082402
ジャーナルApplied Physics Express
8
8
DOI
出版ステータスPublished - 2015 8月 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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