QDL Publications
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A News Release from College of Engineering
The College of Engineering published a news report on advances in mid-infrared laser technology. The report highlights recent progress in mid-infrared interband cascade laser (ICL) at the University of Oklahoma. Link: https://www.ou.edu/coe/news-hub/news-publications/2025/advancing-mid-infrared-laser-technology
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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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Rui Q. Yang
Professor Rui Q. Yang is the director of the QDL. He has been working at University of Oklahoma since 2007. Fellow of IEEE and Optica, Associate Editor of IEEE Photonics Technology Letters Email: Rui.Q.Yang@ou.edu CV
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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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John D. Steward
John received a B.Sc. in Engineering Physics from The University of Oklahoma in 2025. His research interest is mainly in interband cascade lasers. Email: jdsteward2@ou.edu
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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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Yixuan presented an talk at CLEO 2024
Yixuan presented a talk “Long Wavelength Interband Cascade Lasers using Innovative Quantum Well Active Regions” at CLEO 2024. May 9, 2024, Charlotte, NC.
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Prof. Rui Q. Yang presented an invited talk at CLEO 2024
Prof. Rui Q. Yang presented an invited talk “Mid-infrared Interband Cascade Devices for Sensing Applications” at CLEO 2024. May 20, 2024, Charlotte, NC.