N
N. Bandyopadhyay
Researcher at Northwestern University
Publications - 45
Citations - 2058
N. Bandyopadhyay is an academic researcher from Northwestern University. The author has contributed to research in topics: Laser & Quantum cascade laser. The author has an hindex of 26, co-authored 44 publications receiving 1906 citations.
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Room temperature quantum cascade lasers with 27% wall plug efficiency
TL;DR: In this paper, the authors demonstrate InP-based quantum cascade lasers (QCLs) emitting around 4.9μm with 27% and 21% wall plug efficiencies in room temperature (298 K) pulsed and continuous wave (cw) operations, respectively.
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Quantum cascade lasers: from tool to product.
Manijeh Razeghi,Quanyong Lu,N. Bandyopadhyay,Wenjia Zhou,David Heydari,Yanbo Bai,Steven Boyd Slivken +6 more
TL;DR: The quantum cascade laser (QCL) is an important laser source in the mid-infrared and terahertz frequency range, and its tremendous development in power, wall plug efficiency, frequency coverage and tunability, beam quality, as well as various applications based on QCL technology are witnessed.
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2.4 W room temperature continuous wave operation of distributed feedback quantum cascade lasers
TL;DR: In this paper, the authors demonstrate high power continuous-wave room-temperature operation surface-grating distributed feedback quantum cascade laser at 4.8 µm using a combination of high-reflection and antireflection coatings.
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Room temperature continuous wave operation of λ ∼ 3–3.2 μm quantum cascade lasers
TL;DR: In this paper, a quantum cascade laser core consisting of GaInAs/AlInAs using strain balancing technique was demonstrated at wavelengths of 3.2μm and 3.3μm, respectively.
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Highly temperature insensitive quantum cascade lasers
TL;DR: In this article, an InP-based quantum cascade laser (QCL) heterostructure with gas-source molecular beam epitaxy is grown with a shallow-well approach to maximize the characteristic temperatures, T0 and T1, for operations above room temperature.