Abstract

An electro-optic frequency comb enables frequency-agile comb-based spectroscopy without using sophisticated phase-locking electronics. Nevertheless, dense electro-optic frequency combs over broad spans have yet to be developed. In this Letter, we propose a straightforward and efficient method for electro-optic frequency comb generation with a small line spacing and a large span. This method is based on two-stage modulation: generating an 18 GHz line-spacing comb at the first stage and a 250 MHz line-spacing comb at the second stage. After generating an electro-optic frequency comb covering 1500 lines, we set up an easily established mutually coherent hybrid dual-comb interferometer, which combines the generated electro-optic frequency comb and a free-running mode-locked laser. As a proof of concept, this hybrid dual-comb interferometer is used to measure the absorption and dispersion profiles of the molecular transition of H13CN with a spectral resolution of 250 MHz.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
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)

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)

Mid-infrared electro-optic dual-comb spectroscopy with feedforward frequency stepping

Xinyi Ren, Hu Dai, Detian Li, Kun Huang, Mengyun Hu, Tianjian Lv, Ming Yan, and Heping Zeng
Opt. Lett. 45(3) 776-779 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription