Optimization of the pumping conditions for Nd:YAG lasers

Abstract

In this paper we report on the results of comparative investigations of different pump cavities. Numerical estimations of the geometrical transfer efficiency of various cavities are presented. An experimental study of the pumping efficiency and pumping uniformity of the laser heads with respect to the cavity geometry, types of flashlamp, and reflecting coatings have been carried out. The influence of the discharge circuit on the pumping efficiency is also discussed.

Laser Pump Cavity Composites with High Reflectivity

“…Much acttention has been paid on the solid state laser, because it has many excellent properties such as high energy, high average power, compact structure firmness and endurance [1,2]. To a large extent, solid state laser is controlled by reflectivity of laser pump cavity.…”

Effect of pumping position on a diode laser end-pumping solid state laser

“…[8][9][10][11][12][13][14][15][16] Several authors of earlier papers included the spatial distributions of the pump beam and the intracavity circulation intensity in their theoretical studies of the diode-pumped lasers, the optical fiber laser amplifier and oscillator, and the slab waveguide laser to calculate the conversion efficiency of pump photons into lasing photons. On the effect of the position of the pump focus along the optical axis of the solid state laser, some papers predicted that the optimum position is at the center of the laser rod.…”

“…On the effect of the position of the pump focus along the optical axis of the solid state laser, some papers predicted that the optimum position is at the center of the laser rod. [10][11][12][13] However, this prediction was based on an approximation where the variations of both the pump beam radius and the pumped laser beam radius along the optical axis were replaced by their average values. 9 In this paper, we present our theoretical and experimental studies on the effect of the pump position on an endpumped solid state laser.…”