Stabilizing a terahertz quantum-cascade laser using near-infrared optical excitation

被引：0
|
作者：
Alam, Tasmim [1 ]
Wienold, Martin [1 ,2 ]
Lu, Xiang [3 ]
Schrottke, Lutz [3 ]
Grahn, Holger T. [3 ]
Huebers, Heinz-Wilhelm [1 ,2 ]
机构：
[1] German Aerosp Ctr DLR, Inst Opt Sensor Syst, Rutherfordstr 2, D-12489 Berlin, Germany
[2] Humboldt Univ, Dept Phys, Newtonstr 15, D-12489 Berlin, Germany
[3] Leibniz Inst Forschungsverbund Berlin eV, Paul Drude Inst Festkorperelekt, Hausvogteipl 5-7, D-10117 Berlin, Germany
来源：
2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2019年
关键词：
D O I：
10.1109/irmmw-thz.2019.8873858
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrate a technique to simultaneously stabilize the frequency and output power of a terahertz quantum-cascade laser. The technique exploits frequency and power variations upon near-infrared excitation and does not require an external terahertz optical modulator. By locking the frequency to a molecular absorption line, we obtain a linewidth of about 260 kHz and root-mean-square power fluctuations as low as 0.03%.
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页数：2
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