Journal
APPLIED PHYSICS EXPRESS
Volume 16, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/acb1ee
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We present a fast dual-comb spectroscopy technique utilizing a high-repetition-rate dual-wavelength erbium-doped fiber laser with a significant repetition rate difference. It can operate in three different dual-wavelength states with repetition rate differences of 4.32, 2.74, and 3.635 kHz, respectively. The corresponding refresh time can be as low as 231 μs, making it the fastest in dual-comb spectroscopy using a single-mode-locked all-fiber laser. The high repetition rate of approximately 154.68 MHz provides a maximum optical frequency bandwidth of 4.37 THz. Dual-comb spectroscopy was employed to measure the transmittance curve of a Fabry-Perot etalon.
We demonstrate fast dual-comb spectroscopy based on a high-repetition-rate dual-wavelength erbium-doped fiber laser with a large repetition rate difference. It can operate in three different dual-wavelength states with repetition rate differences of 4.32, 2.74 and 3.635 kHz, respectively. To the best of our knowledge, the corresponding refresh time can be as low as 231 mu s, which is the fastest in dual-comb spectroscopy using a single fundamentally mode-locked all-fiber laser. The high repetition rate of approximately 154.68 MHz provides a maximum optical frequency bandwidth of 4.37 THz. Dual-comb spectroscopy was used to measure the transmittance curve of the Fabry-Perot etalon. (c) 2023 The Japan Society of Applied Physics
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