Change in the Properties of AlGaN/InGaN/GaN Structures during the Operation of Electron-Beam-Pumped and Optically Pumped Pulse-Periodic Lasers Based on Them
| Autor: | A. A. Marmalyuk, E. V. Zhdanova, V. B. Mituhliaev, D. E. Loktionov, N. I. Gladyshev, V. B. Studionov, M. M. Zverev, A. A. Padalitsa, A. V. Mazalov, D. R. Sabitov, N. A. Gamov, V. A. Kureshov, V. I. Kozlovsky |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Passivation business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Surfaces Coatings and Films Pulse (physics) law.invention Optical pumping law 0103 physical sciences Cathode ray Optoelectronics Emission spectrum Diffusion (business) 0210 nano-technology business Line (formation) |
| Zdroj: | Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 13:101-104 |
| ISSN: | 1819-7094 1027-4510 |
| Popis: | During the operation of lasers based on an AlGaN/InGaN/GaN structure with electron-beam- and optical pumping, a gradual decrease in the output power is observed. In the first minutes of the operation of optical pumping lasers, a certain increase (by 5–10%) in the output power with a successive gradual decrease can be observed. Upon sample cooling, the rate of output-power degradation decreases. A decrease in the output power during operation of the laser is accompanied by changes in the emission spectrum—the line maximum shifts to the short-wavelength region and additional maxima appear. The observed effects can be explained both by the passivation of the initial defects and the diffusion of atoms of the structure during laser operation. The changes in the emission spectra are apparently associated with competition between two different generation channels. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink