Abstract
We demonstrate a compact monolithic terahertz source continuously tunable from 1.9 THz to 3.9 THz with the maximum peak power output of 106 μW at 3.46 THz at room temperature. The source consists of an array of 10 electrically tunable quantum cascade lasers with intra-cavity terahertz difference-frequency generation. To increase fabrication yield and achieve high THz peak power output in our devices, a dual-section current pumping scheme is implemented using two electrically isolated grating sections to independently control gain for the two mid-IR pumps.
Originalsprache | Englisch |
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Aufsatznummer | 261107 |
Fachzeitschrift | Applied Physics Letters |
Jahrgang | 106 |
Ausgabenummer | 26 |
DOIs | |
Publikationsstatus | Veröffentlicht - 29 Juni 2015 |
Extern publiziert | Ja |