Affiliation:
1. III-V Lab
2. Université Sorbonne Paris Nord
3. Institute of Quantum Electronics
Abstract
Phase modulation is demonstrated in a quantum Stark effect modulator designed to operate in the mid-infrared at wavelength around 10 µm. Both phase and amplitude modulation are simultaneously resolved through the measurement of the heterodyne signal arising from the beating of a quantum cascade laser with a highly stabilized frequency comb. The highest measured phase shift is more than 5 degrees with an associated intensity modulation of 5 %. The experimental results are in full agreement with our model in which the complex susceptibility is precisely described considering the linear voltage dependent Stark shift of the optical resonance.
Funder
ENS-Thales Chair
Agence Nationale de la Recherche
H2020 Future and Emerging Technologies
CNRS Renatech network
Region Ile-De-France
Subject
Atomic and Molecular Physics, and Optics
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