Patent ID: 8559097
Filing Date: 2013-10-15
Classification: H01S

Abstract:
1. A light amplifier comprising: a rare earth oxide, light amplifying gain medium formed into a light waveguide with a light input surface; a pump laser having a light output surface; a lattice matching virtual substrate having first and second opposed surfaces, the first opposed surface being substantially crystal lattice matched to the rare earth oxide light amplifying gain medium and the second opposed surface being substantially crystal lattice matched to the pump laser, the pump laser being further positioned with the light output surface adjacent the light input surface of the gain medium so as to introduce pump energy into the light waveguide; and the lattice matching virtual substrate including a first layer of single crystal rare earth oxide material with a crystal structure and spacing substantially the same as the crystal structure and spacing of the rare earth oxide light amplifying gain medium and a second layer of single crystal rare earth oxide material with a crystal structure and spacing substantially the same as the crystal structure and spacing of an adjacent surface of the pump laser.