We report on the design and fabrication of a dual-wavelength switchable quantum cascade laser(QCL)by optimizing thedesign of a homogeneous active region and combining superposed distributed feedback gratings.Coaxial,s...We report on the design and fabrication of a dual-wavelength switchable quantum cascade laser(QCL)by optimizing thedesign of a homogeneous active region and combining superposed distributed feedback gratings.Coaxial,single-modeemissions at two different wavelengths were achieved only through adjusting the bias voltage.Room temperature continuous-wave operation with output powers of above 30 mW and 75 mW was realized for single-mode emission at 7.61μmand 7.06μm,respectively.The simplified fabrication process and easy wavelength control of our designed dual-wavelengthQCL make it very attractive for developing miniature multi-species gas sensing systems.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61874110,61734006,61991430,61835011,and 62174158)Youth Innovation Promotion Association of the Chinese Academy of Sciences(No.2021107)Key Program of the Chinese Academy of Sciences(No.XDB43000000).
文摘We report on the design and fabrication of a dual-wavelength switchable quantum cascade laser(QCL)by optimizing thedesign of a homogeneous active region and combining superposed distributed feedback gratings.Coaxial,single-modeemissions at two different wavelengths were achieved only through adjusting the bias voltage.Room temperature continuous-wave operation with output powers of above 30 mW and 75 mW was realized for single-mode emission at 7.61μmand 7.06μm,respectively.The simplified fabrication process and easy wavelength control of our designed dual-wavelengthQCL make it very attractive for developing miniature multi-species gas sensing systems.
