naa a22 4500 510804675 CHVBK 20180411083411.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11664-013-2548-5 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2548-5 Room-Temperature Quantum Cascade Laser: ZnO/Zn1− x Mg x O Versus GaN/Al x Ga1− x N [Elektronische Daten] [Hung Chou, Anas Mazady, John Zeller, Tariq Manzur, Mehdi Anwar] A ZnO/Zn1−x Mg x O-based quantum cascade laser (QCL) is proposed as a candidate for generation of THz radiation at room temperature. The structural and material properties, field dependence of the THz lasing frequency, and generated power are reported for a resonant phonon ZnO/Zn0.95Mg0.05O QCL emitting at 5.27THz. The theoretical results are compared with those from GaN/Al x Ga1−x N QCLs of similar geometry. Higher calculated optical output powers [ $$ {P}_{\rm{ZnMgO}} $$ =2.89mW (nonpolar) at 5.27THz and 2.75mW (polar) at 4.93THz] are obtained with the ZnO/Zn0.95Mg0.05O structure as compared with GaN/Al0.05Ga0.95N QCLs [ $$ {P}_{\rm{AlGaN}} $$ =2.37mW (nonpolar) at 4.67THz and 2.29mW (polar) at 4.52THz]. Furthermore, a higher wall-plug efficiency (WPE) is obtained for ZnO/ZnMgO QCLs [24.61% (nonpolar) and 23.12% (polar)] when compared with GaN/AlGaN structures [14.11% (nonpolar) and 13.87% (polar)]. These results show that ZnO/ZnMgO material is optimally suited for THz QCLs. TMS, 2013 ZnMgO nationallicence quantum cascade lasers nationallicence terahertz nationallicence oxide semiconductors nationallicence wall-plug efficiency nationallicence THz power nationallicence Chou Hung Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut Mazady Anas Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut Zeller John Magnolia Optical Technologies, 52B Cummings Park, Suite 314, 01801, Woburn, MA, USA aut Manzur Tariq Naval Undersea Warfare Center (NUWC), 02841-1708, Newport, RI, USA aut Anwar Mehdi Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/5(2013-05-01), 882-888 0361-5235 42:5<882 2013 42 11664 https://doi.org/10.1007/s11664-013-2548-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2548-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chou Hung Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut NATIONALLICENCE 700 1- Mazady Anas Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut NATIONALLICENCE 700 1- Zeller John Magnolia Optical Technologies, 52B Cummings Park, Suite 314, 01801, Woburn, MA, USA aut NATIONALLICENCE 700 1- Manzur Tariq Naval Undersea Warfare Center (NUWC), 02841-1708, Newport, RI, USA aut NATIONALLICENCE 700 1- Anwar Mehdi Department of Electrical and Computer Engineering, University of Connecticut, 06269-2157, Storrs, CT, USA aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/5(2013-05-01), 882-888 0361-5235 42:5<882 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer