Electric field sampling of modelocked pulses from a quantum cascade laser

We measure the electric field of a train of modelocked pulses from a quantum cascade laser in the time-domain by electro-optic sampling. The method relies on synchronizing the modelocked pulses to a reference laser and is applied to 15-ps pulses generated by a 2-THz quantum cascade laser. The pulses...

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Bibliographic Details
Published in:Optics express 2013-07, Vol.21 (13), p.16162-16169
Main Authors: Freeman, Joshua R, Maysonnave, Jean, Beere, Harvey E, Ritchie, David A, Tignon, Jérôme, Dhillon, Sukhdeep S
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:We measure the electric field of a train of modelocked pulses from a quantum cascade laser in the time-domain by electro-optic sampling. The method relies on synchronizing the modelocked pulses to a reference laser and is applied to 15-ps pulses generated by a 2-THz quantum cascade laser. The pulses from the actively modelocked laser are completely characterized in field and in time with a sub-ps resolution, allowing us to determine the amplitude and phase of each cavity mode. The technique can also give access to the carrier-envelope phase of each pulse.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.016162