QDL Publications
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John and Yixuan presented a poster at AMW 2025
John and Yixuan presented a poster “Recent Progress and Negative Differential Conductance in Interband Cascade Lasers” at Advanced Material Workshop, Nov 13, 2025, Norman, OK.
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Improving device performance of type-II interband cascade lasers with room temperature emission wavelengths below 3 μm
Yixuan Shen ; Rui Q. Yang, Tetsuya D. Mishima ; Michael B. Santos ; Xiaojun Wang We report the demonstration of hybrid-cladding interband cascade lasers (ICLs) for a room temperature emission wavelength range from 2.68 to 2.9 μm. Their threshold current density and threshold input power density are substantially lower than previously reported values from superlattice-cladding…
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Room temperature interband cascade lasers near 7.7 µm and dependence on structural quality
Yixuan Shen, Rui Q Yang, John D Steward, Samuel D Hawkins and Aaron J Muhowski Interband cascade lasers (ICLs) are becoming desirable mid-infrared semiconductor laser sources particularly in the 3–6 µm wavelength range due to their low power consumption. In this work, we report the demonstration of room temperature (RT) ICLs based on hybrid-cladding layers and a modified type-II quantum well…
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High Performance Interband Cascade Lasers With Room Temperature Lasing Wavelengths Near 3.3 μm
Yixuan Shen ; Rui Q. Yang, Tetsuya D. Mishima ; Michael B. Santos ; Xiaojun Wang We report significant advancements of interband cascade lasers (ICLs) with hybrid cladding layers. These 6-stage hybrid-cladding ICLs were able to lase in pulsed modes at temperatures up to 421 K, the highest ever reported among ICLs. The lasing wavelength…
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Continuous wave GaSb based ICL with hybrid cladding layers operated at RT and Above
Yixuan Shen ; Rui Q. Yang, Tetsuya D. Mishima ; Michael B. Santos ; Xiaojun Wang We report the preliminary demonstration of continuous wave (cw) GaSb-based interband cascade lasers (ICLs) with hybrid cladding layers at high temperatures up to 80 °C near a wavelength of 3.72 μm. These ICLs have narrow-ridge widths of 7–11 μm with improved thermal…
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Continuous wave interband cascade lasers near 13 μm
Yixuan Shen, Rui Q. Yang, Samuel D. Hawkins, Aaron J. Muhowski We report the demonstration of continuous-wave interband cascade lasers (ICLs) near 13 μm. The attained lasing wavelength of 13.2 μm at 92 K stands as the longest cw emission wavelength ever reported for III-V interband lasers. This achievement is attributed to the adoption of an innovative…
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Single-mode interband cascade laser based on V-coupled cavity with 210 nm wavelength tuning range near 3 μm
Jingli Gong, Zhanyi Wang, Jian-Jun He, Lu Li, Rui Q. Yang, and James A. Gupta By enhancing the coupling coefficient and using a type-I ICL wafer, single-mode ICLs were demonstrated based on V-coupled cavity with significantly extended tuning range and with a side mode suppression ratio (SMSR) exceeding 35 dB in continuous wave operation near…
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Improved Device Performance of Interband Cascade Lasers with Hybrid Cladding Layers Operating in the 3-4 μm wavelength region
Yixuan Shen, Jeremy A. Massengale, Rui Q. Yang, Tetsuya D. Mishima, Michael B. Santos By focusing on a hybrid cladding approach, we demonstrate substantially improved device performance of ICLs compared to earlier reported ICLs of a similar design in the 3–4 µm wavelength region. Including a Jth for broad-area devices as low as 134 A/cm2 at 300 K and a…
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Low threshold long wavelength Interband Cascade Lasers with high voltage efficiencies
Jeremy A. Massengale, Yixuan Shen, Rui Q. Yang, Samuel D. Hawkins, Aaron J. Muhowski We report on the substantial advancement of long wavelength InAs-based interband cascade lasers (ICLs) utilizing advanced waveguides formed from hybrid cladding layers and targeting the 10-12 µm wavelength region. Modifications in the hole injector have improved carrier transport in these ICLs,…
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Interband cascade lasers with advanced waveguide operating in the 3 to 4 µm wavelength region
Jeremy A. Massengale, Yixuan Shen, Rui Q. Yang, Tetsuya D. Mishima, Michael B. Santos Two ICLs (Y086L and Y087L) follow the design of Y082L series with hybrid cladding layers are reported. They have room temperature Jth as low as 148 A/cm2 and high voltage efficiencies of 69%. The highest CW operating temperature T = 260K.…