High-Power AlGaInN LED Emitter for Solid-State Lasers Pumping
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Published:2023-12
Issue:06-2023
Volume:
Page:50-56
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ISSN:2541-9935
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Container-title:Light & Engineering
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language:en
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Short-container-title:L&E
Author:
Aladov Andrey V.1, Zakgeim Alexander L.1, Ivanov Anton E.1, Chernyakov Anton E.1
Affiliation:
1. Federal State Budgetary Institution Scientific and Technological Centre for Microelectronics and Submicron Hetero-structures of the Russian Academy of Sciences
Abstract
The work is devoted to the creation and study of high-power AlGaInN LED source with emission wavelengths (460–480) nm for pumping of solid-state lasers. The electrical, spectral, power and thermal characteristics were studied in a wide range of currents, continuous and pulsed modes. The design of LED matrices, which provides a tight “packing” of LEDs, their electrical commutation, efficient heat removal and a power supply for a wide pulse range has been proposed.
The developed emitter comprises the most powerful and efficient to date LE Q8W (Osram) LEDs and is intended primarily for pumping Ti:Sapphire laser, the absorption band of which is well matched with the emission spectrum of the used LEDs. The achieved optical pumping power density in the pulsed mode is ~25 W/mm2, which corresponds to the lasing threshold.
Publisher
Redakcia Zhurnala Svetotekhnika LLC
Subject
Colloid and Surface Chemistry,Physical and Theoretical Chemistry
Reference23 articles.
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