Blue emitting heterostructure laser diodes

✍ Scribed by G. Landwehr; A. Waag; F. Fischer; H.-J. Lugauer; K. Schüll

• Book ID: 104429271
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 633 KB
• Volume: 3
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(98)00231-8

✦ Synopsis

After a brief discussion of the present state of development of blue GaN-and green ZnSe lasers an overview is given of e orts to improve the lifetime of ZnSe-based laser diodes by incorporation of beryllium. Be-chalcogenides have a relatively large strength due to their bonding properties. Because BeTe and ZnSe are almost lattice matched to GaAs, the growth of type II superlattices of high perfection is possible. This allows to produce graded BeTe=ZnSe low resistance contacts to ZnSe, which have performed very satisfactorily. It can be anticipated that by making use of the full potential of Be-chalcogenides in the design of II-VI laser diodes emitting in the green spectral range, the lifetime of such devices can be extended signiÿcantly. This would allow numerous technical applications.