Time-Domain Fabry-Perot resonators formed inside a dispersive medium

Abstract The impact of loss on the plasmonic resonances in metal-insulatormetal slits is analyzed, particularly the signiﬁcant effect of loss on the reﬂection phase. The reﬂection is calculated analytically using single mode matching theory with the unconjugated form of the orthogonality relation. This theoretical calculation agrees well with comprehensive simulations, but differs substantially from the conjugated orthogonality result, as was used in past analytical works. This reﬂection phase has a large impact on the plasmonic resonance wavelengths, which are calculated using a Fabry-Pérot theory and compared with past experiment and ﬁnite-difference time-domain simulations.

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A Reliable Method for Removing Fabry–Perot Effect in Material Characterization With Terahertz Time-Domain Spectroscopy

IEEE Transactions on Terahertz Science and Technology ◽

10.1109/tthz.2020.3001508 ◽

2020 ◽

Vol 10 (5) ◽

pp. 443-452

Author(s):

Dayou Liu ◽

Tianqi Lu ◽

Feng Qi

Keyword(s):

Time Domain ◽

Material Characterization ◽

Reliable Method ◽

Terahertz Time Domain Spectroscopy ◽

Time Domain Spectroscopy ◽

Fabry Perot

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Time Domain Study on Cavity Ring-Down Signals from a Fabry-Pérot Cavity under Pulsed Laser Excitations

Japanese Journal of Applied Physics ◽

10.1143/jjap.38.6287 ◽

1999 ◽

Vol 38 (Part 1, No. 11) ◽

pp. 6287-6297 ◽

Cited By ~ 12

Author(s):

Jae Yong Lee ◽

Hai-Woong Lee ◽

Jae Won Hahn

Keyword(s):

Time Domain ◽

Pulsed Laser ◽

Fabry Perot ◽

Cavity Ring Down

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Terahertz Time-Domain Spectroscopy Based on Commercially Available 1550 nm Fabry–Perot Laser Diode and ErAs:In(Al)GaAs Photoconductors

Applied Sciences ◽

10.3390/app9132704 ◽

2019 ◽

Vol 9 (13) ◽

pp. 2704 ◽

Cited By ~ 2

Author(s):

Kai-Henning Tybussek ◽

Kevin Kolpatzeck ◽

Fahd Faridi ◽

Sascha Preu ◽

Jan C. Balzer

Keyword(s):

Laser Diode ◽

Time Domain ◽

Dynamic Range ◽

Laser System ◽

Industrial Applications ◽

Thz Radiation ◽

Full Potential ◽

Terahertz Time Domain Spectroscopy ◽

Time Domain Spectroscopy ◽

Fabry Perot

THz time-domain spectroscopy (TDS) is a promising tool for quality control purposes in industrial applications, but the high cost and the relatively large laser sources still make it difficult to use the full potential of the technology for a decent price. In this work, a THz TDS system, which uses a commercially available Fabry–Perot laser diode emitting at 1550 nm, is presented. By dispersion compensation, pulses with a duration of 544 fs were generated, resulting in THz radiation with a bandwidth of 1.4 THz and a peak dynamic range of 56 dB with state-of-the-art ErAs:In(Al)GaAs photoconducting antennas. These results are compared with those of a conventional and expensive fiber laser system with a 90 fs pulse duration.

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