Multireflection pumping concept for miniaturized diode-pumped solid-state lasers.
An innovative pump concept for diode-pumped, solid-state lasers is introduced as an example for an Er:YSGG laser, permitting its miniaturization. Embedded in a multireflective pump cavity, the laser crystal is simultaneously side and end pumped. Specially calculated and shaped deflecting optics distribute the coaxially input pumping light homogeneously over the lateral surface of the crystal, therefore reducing the size of the laser head, including the optical resonator, to a length of 27.5 mm and an outside diameter of 12.5 mm. The differential efficiency achieved is between 8.7% and 24%. The laser emits energy of 15.7 mJ at an absolute efficiency of 9.1% and a repetition rate of 4 Hz.
Meister
Jörg
J
Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany.
Franzen
Rene
R
Apel
Christian
C
Gutknecht
Norbert
N
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D053685:Laser Therapy; D007834:Lasers; D008904:Miniaturization / Q000379:methods*