Abstract

In this Letter, we propose a hybrid dual-comb interferometer (DCI) with a free-running mode-locked laser and an electro-optic frequency comb. The mutual coherence of this DCI is achieved by using an injection locking technique without any complicated phase-locking loops or post data processing algorithms. The proposed architecture is validated by resolving more than 10,000 comb lines of 250 MHz spacing with a refresh rate of 500 kHz. This combination of two kinds of optical frequency comb sources is suitable for wideband spectroscopic applications, where moderate spectral resolutions as well as high refresh rates are necessary.

© 2018 Optical Society of America

Wideband and high-resolution spectroscopy based on an ultra-fine electro-optic frequency comb with seed lightwave selection via injection locking

Bingxin Xu, Xinyu Fan, Shuai Wang, and Zuyuan He
Opt. Lett. 46(8) 1876-1879 (2021)

Fast MHz spectral-resolution dual-comb spectroscopy with electro-optic modulators

Shuai Wang, Xinyu Fan, Bingxin Xu, and Zuyuan He
Opt. Lett. 44(1) 65-68 (2019)

Dense electro-optic frequency comb generated by two-stage modulation for dual-comb spectroscopy

Shuai Wang, Xinyu Fan, Bingxin Xu, and Zuyuan He
Opt. Lett. 42(19) 3984-3987 (2017)

Broadband and high-resolution electro-optic dual-comb interferometer with frequency agility

Bingxin Xu, Xinyu Fan, Shuai Wang, and Zuyuan He
Opt. Express 27(6) 9266-9275 (2019)

Electro-optic THz dual-comb architecture for high-resolution, absolute spectroscopy

Borja Jerez, Frederik Walla, Andrés Betancur, Pedro Martín-Mateos, Cristina de Dios, and Pablo Acedo
Opt. Lett. 44(2) 415-418 (2019)