Igor Vurgaftman

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The in-plane and cross-plane thermal conductivities of the cladding layers and active quantum wells of interband cascade lasers and type-II superlattice infrared detector are measured by the 2-wire 3ω method. The layers investigated include InAs/AlSb superlattice cladding layers, InAs/GaInSb/InAs/AlSb W-active quantum wells, an InAs/GaSb su-perlattice(More)
Silicon integration of mid-infrared (MIR) photonic devices promises to enable low-cost, compact sensing and detection capabilities that are compatible with existing silicon photonic and silicon electronic technologies. Heterogeneous integration by bonding III-V wafers to silicon waveguides has been employed previously to build integrated diode lasers for(More)
A volume Bragg grating recorded in photo-thermo-refractive glass was used to spectrally lock the emission from an 18-μm-wide interband cascade laser ridge to a wavelength of 3.12 μm. The spectral width of emission into the resonant mode is narrowed by more than 300 times, and the thermal wavelength shift is reduced by 60 times. While the power loss penalty(More)
Articles you may be interested in Type-I interband cascade lasers near 3.2μm Thermally activated leakage current in high-performance short-wavelength quantum cascade lasers Microprobe photoluminescence assessment of the wall-plug efficiency in interband cascade lasers Influence of InAs, AlAs δ layers on the optical, electronic, and thermal characteristics(More)
We performed spectroscopy of methane using a broadly tunable external cavity interband cascade laser (EC-ICL). A miniaturized EC-ICL design for field applications, with improved anti-reflection and high-reflection coatings and new EC tuning mechanism, is presented.
Citation Botez, D. et al. " Suppression of carrier leakage in 4.8 [micrometre]-emitting quantum cascade lasers. " Novel In-Plane Semiconductor Lasers IX. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article(More)