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Article Dans Une Revue Applied Physics Letters Année : 2010

Microwave modulation of terahertz quantum cascade lasers : a transmission-line approach

Résumé

We report on microwave impedance measurements of metal-metal ridge-waveguide terahertz quantum cascade lasers. Experimental data, recorded at 4 K in the 100 MHz–55 GHz range, are well reproduced by distributed-parameter transmission-line simulations, showing that the modulation cutoff is limited by the propagation losses that increase for higher microwave frequencies, yielding a 3 dB modulation bandwidth of ∼70 GHz for a 1 mm-long ridge. By using a shunt-stub matching we demonstrate amplitude modulation of a 2.3 THz QCL up to 24 GHz.
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hal-00548728 , version 1 (30-05-2022)

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Wilfried Maineult, Lu Ding, Pierre Gellie, Pascal Filloux, Carlo Sirtori, et al.. Microwave modulation of terahertz quantum cascade lasers : a transmission-line approach. Applied Physics Letters, 2010, 96, pp.021108-1-3. ⟨10.1063/1.3284518⟩. ⟨hal-00548728⟩
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