Near-Room-Temperature Photopumped Blue Lasers in ZnSxSe1-x/ZnSe Multilayer Structures
| Autor: | Koichiro Nakanishi, Ikuo Suemune, Yasuhide Kuroda, Masamichi Yamanishi, Hiroyuki Masato |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Blue laser
business.industry Chemistry General Engineering Analytical chemistry Physics::Optics General Physics and Astronomy Substrate (electronics) Epitaxy Laser law.invention Condensed Matter::Materials Science Lattice constant law Optoelectronics Metalorganic vapour phase epitaxy business Current density Lasing threshold |
| Zdroj: | Japanese Journal of Applied Physics. 29:L2420 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.29.l2420 |
| Popis: | Photopumped blue laser oscillation was achieved up to near room temperature (280 K) in a ZnS0.18Se0.82/ZnSe multilayer structure grown by MOVPE. This significant improvement in the lasing temperature is attributed to the higher heterobarrier which prevents thermoionic emission and to the multilayer structure which has an average lattice constant matched to the GaAs substrate at the growth temperature of 515°C. The threshold excitation optical power density below 200 K where the thermoionic emission is negligible is less than 50 kW/cm2, which corresponds to a current density of 14 kA/cm2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|