Dual-comb spectroscopy using a dual-comb fiber laser based on hybrid pulse formation mechanisms

Zhao, Xin

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https://hdl.handle.net/2142/100565 Copy

Description

Title

Dual-comb spectroscopy using a dual-comb fiber laser based on hybrid pulse formation mechanisms

Author(s)

Zhao, Xin

Contributor(s)

• Zheng, Zheng
• Chen, Jie
• Wu, Yuehan
• Yao, Zijun
• Li, Ting

Issue Date

2018-06-19

Keyword(s)

Mini-symposium: Frequency-Comb Spectroscopy

Abstract

Single-cavity dual-comb fiber laser can generate two ultra-short pulse trains from the same cavity, which could have relatively low common-mode noises and good mutual coherence. They had been demonstrated to be applicable to various dual-comb metrology applications including optical spectroscopya , absolute distance measurementb and so on. Here, broadband dual-comb spectroscopy measurement using a broadband modelocked dual-comb fiber laser based on hybrid pulse formation mechanisms is demonstrated. Through the dispersion management in the cavity, the bandwidths of both pulses are greatly increased. Dual-comb pulse with broader spectra can be generated when the pump power is above the threshold power. After jointly being amplified by an Erbium-doped fiber amplifier, the 3-dB spectral bandwidths, at the center wavelength of 1550nm and 1555nm, have been broadened from 4.4nm and 1.3nmc to 58.8nm and 8.5nm, respectively. Also, the 10-dB width of the overlapped spectra is over 16nm, covering 1546nm to 1562nm. The repetition rate difference of two pulse trains is 37Hz, because of the small difference in their center wavelengths and the low cavity dispersion. Then, typical asynchronous experimental setup is used to measure transmission spectrum of an on-chip microring resonator by averaging over 30 interferograms. All the resonance spectral features are clearly resolved. This kind of dual-comb fiber lasers could offer extra options for low-complexity, dual-comb metrology applications.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100565

DOI

10.15278/isms.2018.TA06

Copyright and License Information

Copyright 2018 Xin Zhao

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