Laser and method for production thereof

摘要

The invention provides a laser and a method for the production thereof by which it is possible to fabricate a device on a Si substrate, and to fabricate further an optical device such as an optical memory on the Si substrate. The laser has an Er-doped nano-ultrafine crystalline Si waveguide formed on the Si substrate wherein the Er-doped nano-ultrafine crystalline Si layer is co-doped with oxygen to result in a structure in which Er ion is surrounded by at least one or more oxygen atom(s).