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

被引：47

作者：

Maineult, W. ^{[1
]}

Ding, L. ^{[1
]}

Gellie, P. ^{[1
]}

Filloux, P. ^{[1
]}

Sirtori, C. ^{[1
]}

Barbieri, S. ^{[1
]}

Akalin, T. ^{[2
]}

Lampin, J. -F. ^{[2
]}

Sagnes, I. ^{[3
]}

Beere, H. E. ^{[4
]}

Ritchie, D. A. ^{[4
]}

机构：

[1] Univ Paris 07, CNRS, UMR 7162, Lab Mat & Phenomenes Quant MPQ, F-75205 Paris, France

[2] Univ Lille 1, CNRS, UMR 8520, IEMN, F-59652 Villeneuve Dascq, France

[3] Lab LPN, F-91460 Marcoussis, France

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

amplitude modulation; laser variables measurement; microwave photonics; optical modulation; quantum cascade lasers; submillimetre wave lasers; waveguide lasers; THZ;

D O I：

10.1063/1.3284518

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 similar to 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.

引用

页数：3

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