Martin A. Kainz, Mykhaylo P. Semtsiv, Georgios Tsianos, Sergii Kurlov, W. Ted Masselink, Sebastian Schönhuber, Hermann Detz, Werner Schrenk, Karl Unterrainer, Gottfried Strasser, and Aaron M. Andrews
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| Fig. 3 THz QCL performance cooled with the thermoelectric cooler. (a) Light-current behaviour in pulsed mode and an operating temperature of 171 K (TEC input: 15 A, 32.1 V). (b) Pulsed and average power of the QCL at different duty cycles. A maximum average power of 120 μW is reached at a duty cycle of 5%. |
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-27-15-20688
We demonstrate the first lasing emission of a thermo-electrically cooled terahertz quantum cascade laser (THz QCL). A high temperature three-well THz QCL emitting at 3.8 THz is mounted to a novel five-stage thermoelectric cooler reaching a temperature difference of ΔT = 124 K. The temperature and time-dependent laser performance is investigated and shows a peak pulse power of 4.4 mW and a peak average output power of 100 μW for steady-state operation.
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