Spontaneous phase locking in a broad-area semiconductor laser
Sign Up to like & getrecommendations! Published in 2024 at "Nature Photonics"
DOI: 10.1038/s41566-024-01604-x
Abstract: Broad-area semiconductor lasers are used in many high-power applications; however, their spatio-temporal dynamics are complex and intrinsically unstable due to the interaction between transverse lasing modes. Here a dynamical and ultrahigh-resolution spatio-spectral analysis of commercial… read more here.
Keywords: area semiconductor; broad area; phase locking; phase ... See more keywords
Beam shaping in high-power broad-area quantum cascade lasers using optical feedback
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/srep44284
Abstract: Broad-area quantum cascade lasers with high output powers are highly desirable sources for various applications including infrared countermeasures. However, such structures suffer from strongly deteriorated beam quality due to multimode behavior, diffraction of light and… read more here.
Keywords: feedback; broad area; optical feedback; cascade lasers ... See more keywords
Continuous wave operation of broad area and ridge waveguide laser diodes at 626 nm
Sign Up to like & getrecommendations! Published in 2024 at "IET Optoelectronics"
DOI: 10.1049/ote2.12125
Abstract: The authors present continuous wave (CW) high‐power broad area and ridge waveguide lasers with laser emission at 626 nm at room temperature. For this, the authors employ GaAs‐based diode lasers in the AlGaInP system for laser… read more here.
Keywords: operation; ridge waveguide; broad area; area ridge ... See more keywords
Distributed loss method to suppress high order modes in broad area quantum cascade lasers
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.5006042
Abstract: We describe a method where the standard fabrication of broad area quantum cascade lasers is modified to provide a controlled amount of direct contact of device sidewalls with metal. We demonstrate that this provides sufficient… read more here.
Keywords: area quantum; quantum; broad area; cascade lasers ... See more keywords
High-efficiency and high-brightness broad area laser diodes with buried implantation current blocking
Sign Up to like & getrecommendations! Published in 2024 at "Physica Scripta"
DOI: 10.1088/1402-4896/ad368a
Abstract: Buried-regrown-implant-structure (BRIS) technology combines two-step epitaxial regrowth with an intermediate ion implantation step in order to realise a buried current aperture close to the active region of a laser diode. In this paper we carry… read more here.
Keywords: laser; efficiency; bris; broad area ... See more keywords
Effect of traps and conductive pathways on electron emission from copper broad-area composite emitters
Sign Up to like & getrecommendations! Published in 2024 at "Physica Scripta"
DOI: 10.1088/1402-4896/ad80df
Abstract: This study investigates electron emission from copper broad-area emitters (CBAEs) and copper broad-area composite emitters (CBACEs) based on the principles of trapping and conductive pathways. Emission current measurements were conducted on two CBACEs, which consisted… read more here.
Keywords: broad area; copper; copper broad; conductive pathways ... See more keywords
Broad area quantum cascade lasers operating in pulsed mode above 100 ℃ at λ ~4.7 μ m
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Semiconductors"
DOI: 10.1088/1674-4926/38/7/074005
Abstract: We demonstrate a broad area (400 μ m) high power quantum cascade laser (QCL). A total peak power of 62 W operating at room temperature is achieved at λ ~4.7 μ m. The temperature dependence… read more here.
Keywords: area quantum; cascade lasers; quantum cascade; broad area ... See more keywords
Parallel On-Chip Physical Random Number Generator Based on Self-Chaotic Dynamics of Free-Running Broad-Area VCSEL Array
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Journal of Selected Topics in Quantum Electronics"
DOI: 10.1109/jstqe.2024.3462489
Abstract: Random numbers, as a cornerstone in the interconnected digital world, are used in secure cryptographic protocols for commercial transactions, computing, and communications. Instead of the traditional deterministic pseudorandom numbers, physical random number generation (RNG) is… read more here.
Keywords: chaotic dynamics; physical random; area; vcsel ... See more keywords
Aging Mechanisms of Broad Area ∼800 nm Laser Diodes
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Journal of Selected Topics in Quantum Electronics"
DOI: 10.1109/jstqe.2024.3466169
Abstract: This work presents a comprehensive study of early aging behavior ( read more here.
Keywords: laser; aging mechanisms; oxygen; broad area ... See more keywords
Power scaling and experimentally fitted model for broad area quantum cascade lasers in continuous wave operation
Sign Up to like & getrecommendations! Published in 2017 at "Optical Engineering"
DOI: 10.1117/1.oe.57.1.011011
Abstract: Abstract. Experimental and model results for 15-stage broad area quantum cascade lasers (QCLs) are presented. Continuous wave (CW) power scaling from 1.62 to 2.34 W has been experimentally demonstrated for 3.15-mm long, high reflection-coated QCLs… read more here.
Keywords: area quantum; broad area; power; model ... See more keywords
Experimental investigation of broad area quantum cascade lasers under external feedback.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.017927
Abstract: Mode creation and temporal response of broad-area quantum cascade lasers (BA-QCL) placed within an external feedback cavity are described in this publication. The critical feedback parameter becomes the mirror angle relative to the BA-QCL facet.… read more here.
Keywords: area quantum; external feedback; feedback; broad area ... See more keywords