High-Power Micro-Optical Bench Terahertz Quantum-Cascade Laser System
R. Voigt1,2, M. Wienold2, X. Lü3, L. Schrottke3, K. Biermann3, A. Sahm4, K. Paschke4, and H.-W. Hübers1,2
Published in:
IEEE Trans. Terahertz Sci. Technol., vol. 16, no. 4, pp. 482-486 (2026).
Abstract:
We report on compact high-power terahertz quantum-cascade laser systems. By integrating the optical components, namely, a lens, a polarization filter, and a λ/4 waveplate, on a micro-optical bench, we achieve optical isolation as well as beamforming while maintaining high output power without the need of additional optical elements. In the future, such quantum-cascade laser systems might be implemented as local oscillators in heterodyne receivers for space applications.
1 Department of Physics, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
2 German Aerospace Center (DLR), Institute of Space Research, 12489 Berlin, Germany
3 Paul-Drude-Institut für Festkörperphysik, Leibniz-Institut im Forschungsverbund Berlin e.V., 10117 Berlin, Germany
4 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH), 12489 Berlin, Germany
Index Terms:
Micro-optics, optical mixing, quantum cascade lasers (QCLs), spectroscopy, terahertz (THz) radiation
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