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Semiconductor optical ampliﬁer-based heterodyning detection for resolving optical terahertz beat-tone signals from passively mode-locked semiconductor lasers

Latkowski, Sylwester and Maldonado, Ramon and Carney, Kevin and Parra-Cetina, Josue and Philippe, Severine and Landais, Pascal (2010) Semiconductor optical ampliﬁer-based heterodyning detection for resolving optical terahertz beat-tone signals from passively mode-locked semiconductor lasers. Applied Physics Letters, 97 (8). ISSN 1077-3118

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Abstract

An all-optical heterodyne approach based on a room-temperature controlled semiconductor optical amplifier (SOA) for measuring the frequency and linewidth of the terahertz beat-tone signal from a passively mode-locked laser is proposed. Under the injection of two external cavity lasers, the SOA acts as a local oscillator at their detuning frequency and also as an optical frequency mixer whose inputs are the self-modulated spectrum of the device under test and the two laser beams. Frequency and linewidth of the intermediate frequency signal and therefore, the beat-tone signal are resolved by using a photodiode and an electrical spectrum analyzer

Item Type:	Article (Published)
Refereed:	Yes
Subjects:	Engineering > Optical communication Physical Sciences > Optoelectronics Physical Sciences > Detectors Physical Sciences > Lasers Physical Sciences > Semiconductors
DCU Faculties and Centres:	DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Publisher:	American Institute of Physics
Official URL:	http://dx.doi.org/10.1063/1.3481674
Copyright Information:	© 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Use License:	This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:	16749
Deposited On:	12 Jan 2012 10:54 by Pascal Landais. Last Modified 12 Jan 2012 10:54

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