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Possibility of Pumping Alexandrite and Ti:Sapphire Lasers with LED Emissions in the Range of 440–510 nm
Abstract
This work examines the energy and spectral characteristics of the most powerful modern AlInGaN LEDs with peak emission wavelengths of 440, 470, and 510 nm in relation to pumping two laser media: Ti:Sapphire (Ti:Al2O3) and alexandrite (Cr:Al2BeO4). The absorption coefficients of LED radiation in laser media have been experimentally studied depending on the peak wavelength, operating mode, and excitation level. The corresponding values of spectral matching (efficiency of absorption of pump radiation) are calculated for various combinations of LEDs and active laser media. The energy characteristics (radiation power, energy per pulse) of LED emitters in a wide range of excitation levels have been studied. The maximum energy capabilities have been assessed, both in terms of output optical power and efficiency. The optimal combinations of LED and active laser medium to achieve lasing have been determined.
Keywords
About the Authors
A. V. Aladov
Submicron Heterostructures for Microelectronics, Research and Engineering Center of RAS
Russian Federation
Russian Federation
St. Petersburg
A. L. Zakgeim
Submicron Heterostructures for Microelectronics, Research and Engineering Center of RAS
Russian Federation
Russian Federation
St. Petersburg
A. E. Ivanov
St. Petersburg Electrotechnical University “LETI”
Russian Federation
Russian Federation
St. Petersburg
A. E. Chernyakov
Submicron Heterostructures for Microelectronics, Research and Engineering Center of RAS
Russian Federation
Russian Federation
St. Petersburg
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Review
For citations:
Aladov A.V., Zakgeim A.L., Ivanov A.E., Chernyakov A.E. Possibility of Pumping Alexandrite and Ti:Sapphire Lasers with LED Emissions in the Range of 440–510 nm. Zhurnal Prikladnoii Spektroskopii. 2024;91(2):204-210. (In Russ.)
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