Terahertz bandwidth RF spectrum analysis of femtosecond pulses using a chalcogenide chip

Date

2009-05-19

Authors

Pelusi, Mark
Vo, T D
Luan, F
Madden, Steve
Bulla, Douglas
Luther-Davies, Barry
Eggleton, Benjamin J
Choi, Duk-Yong

Journal Title

Journal ISSN

Volume Title

Publisher

Optical Society of America

Abstract

We report the first demonstration of the use of an RF spectrum analyser with multi-terahertz bandwidth to measure the properties of femtosecond optical pulses. A low distortion and broad measurement bandwidth of 2.78 THz (nearly two orders of magnitude greater than conventional opto-electronic analyzers) was achieved by using a 6 cm long As2S3 chalcogenide waveguide designed for high Kerr nonlinearity and near zero dispersion. Measurements of pulses as short as 260 fs produced from a soliton-effect compressor reveal features not evident from the pulse’s optical spectrum. We also applied an inverse Fourier transform numerically to the captured data to re-construct a time-domain waveform that resembled pulse measurement obtained from intensity autocorrelation.

Description

Keywords

nonlinear optical signal processing, spectrum analysis, nonlinear optics, devices, ultrafast nonlinear optics

Citation

Optics Express 17.11 (2009): 9314-9322

Source

Optics Express

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1364/OE.17.009314

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