Industrial Technology Research Institute

Man-Fung Huang

Kwang-Kuo Shih

Ming-Huang Hong

A laser diode for digital versatile disks or other purposes and its fabricating method are disclosed. The fabrication does not require any regrowth steps during the MOCVD process or the formation of nitride or oxide to serve as dielectrics, thus significantly simplifying the fabrication process. Further, the laser diode can operate with a relatively low threshold current due to its excellent current confinement. The laser diode for digital versatile disk is made of AlGaInP alloy, in which a layer of Al,Ga,As, where x>0.8, is formed between the AlGaInP cladding layers. The layer of Al,Ga,As is then oxidized in a hot vapor atmosphere to form AlO,that has at least one opening formed thereon. The AlO,layer serves as a current confinement layer and can provide excellent current confinement. The AlO,layer can also serve as a dielectric layer in the ridge structure.

Growing community of inventors

Hsinchu Hsien, Taiwan

Man-Fung Huang