Kang, Joonhyun Yang, Hyun-Duk Joo, Beom Soo Park, Joon-Suh Lee, Song-Ee Jeong, Shinyoung Kyhm, Jihoon Han, Moonsup Song, Jin Dong Han, Il Ki 2024-01-20T01:00:46Z 2024-01-20T01:00:46Z 2021-09-05 2017-08-07 1094-4087 https://pubs.kist.re.kr/handle/201004/122422 SiO2 is a commonly used insulation layer for QCLs but has high absorption peak around 8 to 10 mu m. Instead of SiO2, we used Y2O3 as an insulation layer for DC-QCL and successfully demonstrated lasing operation at the wavelength around 8.1 mu m. We also showed 2D numerical analysis on the absorption coefficient of our DC-QCL structure with various parameters such as insulating materials, waveguide width, and mesa angle. (C) 2017 Optical Society of America English OPTICAL SOC AMER CONTINUOUS-WAVE OPERATION HIGH-POWER OPTICAL-PROPERTIES HIGH-TEMPERATURE THIN-FILMS Quantum cascade lasers with Y2O3 insulation layer operating at 8.1 mu m Article 10.1364/OE.25.019561 1 OPTICS EXPRESS, v.25, no.16, pp.19561 - 19567 OPTICS EXPRESS 25 16 19561 19567 scie scopus 000409326900115 2-s2.0-85026836823 Optics Optics Article CONTINUOUS-WAVE OPERATION HIGH-POWER OPTICAL-PROPERTIES HIGH-TEMPERATURE THIN-FILMS semiconductor lasers quantum cascade lasers insulation layer