Journal ArticleDOI
Degradation behavior of 0.98-/spl mu/m strained quantum well InGaAs/AlGaAs lasers under high-power operation
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In this paper, the degradation behavior of 0.98/spl mu/m strained quantum well (QW) InGaAs/AlGaAs lasers with facet coating films is systematically clarified at high power operations of more than 100 mW/facet.Abstract:
The degradation behavior of 0.98-/spl mu/m strained quantum well (QW) InGaAs/AlGaAs lasers with facet coating films is systematically clarified at high-power operations of more than 100 mW/facet. The degradation is mainly caused by the instability of the interface between the laser material (facet) and the antireflecting (AR) coating film. This phenomenon is associated with a high rate of facet oxidation and generation of instantaneous catastrophic optical damage (COD) at a relatively low optical output power in lasers without facet coating films. Throughout the clarification of those phenomena, the main reliability problem in 0.98-/spl mu/m strained QW lasers under high output power operation is clarified. >read more
Citations
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Journal ArticleDOI
High efficiency low threshold current 1.3 μm InAs quantum dot lasers on on-axis (001) GaP/Si
Daehwan Jung,Justin Norman,Michael Kennedy,Chen Shang,Bongki Shin,Yating Wan,Arthur C. Gossard,John E. Bowers +7 more
TL;DR: In this article, the authors demonstrate highly efficient, low threshold InAs quantum dot lasers epitaxially grown on on on-axis (001) GaP/Si substrates using molecular beam epitaxy.
Journal ArticleDOI
Improved catastrophic optical damage level from laser with nonabsorbing mirrors
TL;DR: In this paper, the authors demonstrate an improved catastrophic optical damage (COD) level from a ridge laser with nonabsorbing mirrors (NAMs) fabricated by quantum well intermixing.
Journal ArticleDOI
A new scheme of a lensed fiber employing a wedge-shaped graded-index fiber tip for the coupling between high-power laser diodes and single-mode fibers
Hidehiko Yoda,K. Shiraishi +1 more
TL;DR: In this paper, a novel lensed fiber employing a wedge-shaped graded-index fiber (GIF) was proposed and the characteristic of coupling loss as a function of the aspect ratio was numerically investigated.
Journal ArticleDOI
Optical strength of semiconductor laser materials
TL;DR: In this article, a review of optical damage in semiconductor laser materials is presented with compilation of empirical data, discussion on theoretical explanation and modeling of related processes, and a self-consistent model is considered for quantum-well lasers.
Journal ArticleDOI
Improvement of catastrophic optical damage (COD) level for high-power 0.98-μm GaInAs-GaInP laser
TL;DR: In this paper, an improvement of catastrophic optical damage (COD) level for Al-free 0.98/spl mu/m ridge waveguide laser diodes (LDs) using the impurity induced layer disordering (IILD) process applied near the facets was investigated.
References
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Nonradiative capture and recombination by multiphonon emission in GaAs and GaP
Charles H. Henry,D. V. Lang +1 more
TL;DR: In this paper, a simple theory of multiphonon emission (MPE) capture is presented in which vibrations of a single lattice coordinate modulate the depth of the potential well binding the carrier.
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Catastrophic damage of AlxGa1−xAs double‐heterostructure laser material
TL;DR: In this paper, the authors carried out a detailed study of catastrophic degradation in DH laser material from which they reached two conclusions: local melting occurs and is due to intense nonradiative recombination of minority carriers at a cleaved surface or at a defect.
Journal ArticleDOI
Mapping of local temperatures on mirrors of GaAs/AlGaAs laser diodes
Hans Brugger,Peter W. Epperlein +1 more
TL;DR: In this paper, the authors show that λ/2.2.Al2O3 coatings can withstand up to 4-5 times the power density without significant heating and degradation and show that the resonator bulk material remains cold (ΔT < 5 K).