OPTICAL PUMPING STRUCTURE

摘要

The invention relates to an optical pumping structure for a laser that includes: an active medium in the form of a cylindrical rod (1) having a circular cross-section and inserted at both ends thereof into two rings (11) made of a thermally conductive material; at least three stacks (21, 22) of pumping diode bars arranged in the form of a star about the rod; and a bearing (5) adjusted in temperature by a Peltier-effect module (8). The rings (11) are in contact with the bearing (5), and a stack of diodes, referred to as a lower stack (21), is arranged between the rod (1) and the bearing (5). The structure includes, for each other stack (22), a thermal conduction block (7) defining a substrate for said stack (22), said blocks (7) being mounted on the cooled bearing (5) and having no contact therebetween nor with the rings (11).