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Time resolved studies of catastrophic optical mirror damage in red-emitting laser diodes

Elliott, Stella, Smowton, Peter Michael ORCID:, Ziegler, Martin, Tomm, J. and Zeimer, U. 2010. Time resolved studies of catastrophic optical mirror damage in red-emitting laser diodes. Journal of Applied Physics 107 (12) , 123116. 10.1063/1.3437395

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We have observed the changing light intensity during catastrophic optical mirror damage (COMD) on the timescale of tens of nanoseconds using red-emitting AlGaInP quantum well based laser diodes. Using as-cleaved facets and this material system, which is susceptible to COMD, we recorded the drop in light intensity and the area of damage to the facet, as a function of current, for single, high current pulses. We found that in the current range up to 40 A, the total COMD process up to the drop of light intensity to nonlasing levels takes place on a timescale of hundreds of nanoseconds, approaching a limiting value of 200 ns, and that the measured area of facet damage showed a clear increase with drive current. Using a straightforward thermal model, we propose an explanation for the limiting time at high currents and the relationship between the time to COMD and the area of damaged facet material.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Uncontrolled Keywords: aluminium compounds, III-V semiconductors, laser beam effects, laser mirrors, quantum well lasers
Additional Information: 7 pp.
Publisher: American Institute of Physics
ISSN: 0021-8979
Last Modified: 05 May 2023 13:18

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