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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 ICLs at similar wavelengths. These ICLs were able to operate in pulsed modes at temperatures close to 400 K. At 300 K, the threshold current density was as low as 191 A/cm2 with a threshold input power density of 693 W/cm2. Narrow ridge devices lased in a continuous wave (cw) mode at room temperature and above with threshold current density and output power that are improved compared to previous ICLs at similar wavelengths. Comparative studies of devices with different local material qualities from the same wafer and different wafers revealed a certain correlation between Shockley–Read–Hall recombination and threshold current density, which shed light on understanding the degradation of device performance with the shortening of the lasing wavelength of type-II ICLs. Additionally, negative differential conductance features were observed under reverse bias voltage, which may provide an interesting and potentially useful means to examine the material and fabrication qualities of devices with some extended applications.
DOI: 10.1063/5.0286553
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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.
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Yixuan presented a poster at MIOMD
We are excited to announce that Yixuan recently presented a poster at the 16th International Conference on Mid-Infrared Optoelectronics: Materials and Devices (MIOMD XVI 2023) with the title of “Carrier Concentration-Dependent Optical Properties of Narrow Gap Semiconductors”.
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Jeremy presented a poster at MIOMD
We are excited to announce that Jeremy recently presented a poster at the 16th International Conference on Mid-Infrared Optoelectronics: Materials and Devices (MIOMD XVI 2023) with the title of “GaSb-based Interband Cascade Lasers with Hybrid Cladding Layers Operating in the 3-4 μm Wavelength Region”.
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Yixuan Shen successfully defended his Master thesis
Yixuan Shen successfully defended his Master thesis entitiled.
“Electron concentration-dependent optical properties of indium arsenide”
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Jeremy Massengale presented a poster titled, “Long Wavelength Interband Cascade Lasers”
Jeremy Massengale presented a poster titled, “Long Wavelength Interband Cascade Lasers”, at the Graduate Research Poster Session (GRPS) hosted by the Homer L. Dodge Department of Physics and Astronomy at the University of Oklahoma.
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Jeremy Alan Massengale successfully defended his Ph.D. dissertation
Jeremy Alan Massengale successfully defended his Ph.D. dissertation entitled “Molecular beam epitaxial growth of interband cascade structures with advances in InAs- and GaSb-based interband cascade lasers”
Read more about Jeremy’s dissertation
Congratulations!
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Recent achievements posted on Semiconductor Today
Our recent achievement in long wavelength interband cascade lasers was featured on Semiconductor Today -“Extending interband cascade laser wavelength”
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Shattering records! How new efforts are shaping the future of mid-infrared lasers.
Jeremy Massengale was selected as one of the Spring 2023 Three Minute Thesis (3MT) finalists for OU where he presented a talk on his dissertation research titled “Shattering records! How new efforts are shaping the future of mid-infrared lasers.”
This competition celebrates the exciting research conducted by Doctor of Philosophy students. It was originally developed by The University of Queensland, 3MT cultivates students’ academic, presentation, and research communication skills. The competition supports their capacity to effectively explain their research in three minutes, in a language appropriate to a non-specialist audience.
