LASER PUMP CAVITY APPARATUS WITH IMPROVED THERMAL LENSING CONTROL, COOLING, AND FRACTURE STRENGTH AND METHOD

摘要

A laser pump cavity apparatus with integral concentrator, comprising: a doped solid-state laser medium providing an active lasing region (16) having a top surface (40), a bottom surface (42) and at least two side surfaces (44) surrounding a laser beam axis (12); and a concentrator having a top cladding layer (46) formed on the top surface of the active laser region and having a first concave cylindrical outer surface (18) and a bottom cladding layer (48) formed on the bottom surface of the active lasing region and having a second concave cylindrical outer surface (18), said first cylindrical surface defining a first optical line focus (20) located parallel to the laser beam axis and above the laser pump cavity apparatus, said second cylindrical surface defining a second optical line focus (20) located parallel to the laser beam axis, and below the laser pump cavity apparatus, wherein at least the top and bottom cladding layers of the concentrator are formed of a different material than the doped solid-state laser medium. 3854 ט' בשבט התשס" ג - January 12, 2003