Laser assembly and semiconductor laser for optical pumping of a laser

摘要

#CMT# #/CMT# The arrangement has a semiconductor laser (1) for emitting pump radiations (6) for pumping an optically pumped laser (2), which is a solid state laser. The semiconductor laser has a set of monolithically integrated active regions (3-5), which are arranged on top of each other. Two of the active regions emit pump radiations of different wave lengths for optically pumping different absorption bands of an active medium (7) of the optically pumped laser. The semiconductor laser has a resonator, whose length ranges from 0.3 millimeter (mm) to 10 mm. #CMT#USE : #/CMT# Laser arrangement. #CMT#ADVANTAGE : #/CMT# The monolithically integrated active regions of the semiconductor laser emit pump radiations of different wave lengths for optically pumping different absorption bands of the active medium of the optically pumped laser, thus eliminating the need for an additional pump laser for pumping different absorption bands of the active medium. The avoidance of the additional pump laser reduces installation space, manufacturing complexity and cost of the laser arrangement, and hence improving efficiency of the optical pumping of the optically pumped laser. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic graphical view of a cross-section of a laser arrangement. 1 : Semiconductor laser 2 : Optically pumped laser 3-5 : Active regions 6 : Pump radiations 7 : Active medium #CMT#INORGANIC CHEMISTRY : #/CMT# The active medium contains neodymium-doped yttrium aluminum garnet, neodymium-doped yttrium orthovanada, neodymium-doped yttrium orthoaluminate, neodymium-doped yttrium lithium fluoride, ytterbium-doped yttrium aluminum garnet, titanium-doped saphir.