ELECTRON BEAM PUMPING LASER, MANUFACTURE OF ELECTRON BEAM PUMPING LASER, AND DRIVE METHOD OF ELECTRON BEAM PUMPING LASER

摘要

PURPOSE: To provide an electrom beam pumping laser with a high threshold level of laser oscillation by obtaining a high optical reflectively while maintaining high utilization of incident energy. ;CONSTITUTION: This electrom beam pumping laser is provided with an active layer 2, and optical reflecting layers 1 and 3 which are formed so as to sandwich the active layer 2. An electron beam 5 is made to enter the active layer 2 from the side surface of the active layer 2, and a laser beam is radiated perpendicularly to the active layer 2. At least one side of the optical reflecting layers 1 and 3 is provided with a plurality of very small concave mirror parts or a plurality of very small Fresnel reflecting mirror parts. The focal length of the very small concave mirror part of the very small Fresnel reflecting mirror parts or semicircular type reflecting mirror parts is set to be greater than or equal to the width of the active layer 2.;COPYRIGHT: (C)1996,JPO