Mid-Infrared Quantum Cascade Lasers With Electrical Control of the Emission Frequency

作者：Jang Min^*; Suchalkin Surgey; Belkin Mikhail A

来源：IEEE Journal of Quantum Electronics, 2013, 49(1): 60-64.

DOI：10.1109/JQE.2012.2227954

• Frequency modulation
• III-V semiconductor lasers
• mid- and far-infrared lasers
• quantum cascade lasers

We discuss the design of mid-infrared quantum cascade lasers in which the emission frequency can be rapidly modulated by applied bias voltage. The devices are based on integrating a layer with voltage-variable refractive index, based on Stark-tunable inter-sub-band transitions, below the laser active region. A three-terminal configuration is used to independently bias the laser active region and the refractive index variation layer. The ultimate performance of the proposed scheme is analyzed theoretically and proof-of-principle devices are demonstrated experimentally. Experimentally, lambda approximate to 10 mu m lasers demonstrate up to 4.5-GHz frequency tuning at a temperature of 80 K.

• 出版日期2013-1