Self-triggered Asynchronous Optical Sampling Terahertz Spectroscopy using a Bidirectional Mode-locked Fiber Laser

R. Dawson Baker; N. Tolga Yardimci; Yi Hsin Ou; Khanh Kieu; Mona Jarrahi

doi:10.1038/s41598-018-33152-0

Self-triggered Asynchronous Optical Sampling Terahertz Spectroscopy using a Bidirectional Mode-locked Fiber Laser

R. Dawson Baker, N. Tolga Yardimci, Yi Hsin Ou, Khanh Kieu, Mona Jarrahi

Optical Sciences

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We report a self-triggered asynchronous optical sampling terahertz spectroscopy system based on a single bidirectional mode-locked fiber laser and plasmonics-enhanced photoconductive nanoantennas. The fiber laser generates two optical mutually coherent pulse trains with a stable repetition rate difference, enabling time-domain terahertz spectroscopy without using any mechanical delay line, stabilization electronics, or external trigger. The resolved terahertz spectra over a 0.1–2 THz frequency range and a 30-second measurement time show more than a 70-dB dynamic range, revealing water absorption lines matching the HITRAN database, through a light-weight and compact spectroscopy setup.

Original language	English (US)
Article number	14802
Journal	Scientific reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-33152-0
State	Published - Dec 1 2018

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title = "Self-triggered Asynchronous Optical Sampling Terahertz Spectroscopy using a Bidirectional Mode-locked Fiber Laser",

abstract = "We report a self-triggered asynchronous optical sampling terahertz spectroscopy system based on a single bidirectional mode-locked fiber laser and plasmonics-enhanced photoconductive nanoantennas. The fiber laser generates two optical mutually coherent pulse trains with a stable repetition rate difference, enabling time-domain terahertz spectroscopy without using any mechanical delay line, stabilization electronics, or external trigger. The resolved terahertz spectra over a 0.1–2 THz frequency range and a 30-second measurement time show more than a 70-dB dynamic range, revealing water absorption lines matching the HITRAN database, through a light-weight and compact spectroscopy setup.",

author = "Baker, {R. Dawson} and Yardimci, {N. Tolga} and Ou, {Yi Hsin} and Khanh Kieu and Mona Jarrahi",

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AU - Ou, Yi Hsin

AU - Kieu, Khanh

AU - Jarrahi, Mona

N1 - Funding Information: We gratefully acknowledge the financial support from the Moore Inventor Fellowship, National Science Foundation (contract #1305931, #1610048), and National Institutes of Health (contract #1R01GM112693-01A1). Publisher Copyright: © 2018, The Author(s).

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N2 - We report a self-triggered asynchronous optical sampling terahertz spectroscopy system based on a single bidirectional mode-locked fiber laser and plasmonics-enhanced photoconductive nanoantennas. The fiber laser generates two optical mutually coherent pulse trains with a stable repetition rate difference, enabling time-domain terahertz spectroscopy without using any mechanical delay line, stabilization electronics, or external trigger. The resolved terahertz spectra over a 0.1–2 THz frequency range and a 30-second measurement time show more than a 70-dB dynamic range, revealing water absorption lines matching the HITRAN database, through a light-weight and compact spectroscopy setup.

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Self-triggered Asynchronous Optical Sampling Terahertz Spectroscopy using a Bidirectional Mode-locked Fiber Laser

Abstract

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