Scalable vertically diode-pumped solid-state lasers

H - Electricity – 01 – S

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Details

H01S 3/09 (2006.01) H01S 3/0941 (2006.01) H01S 3/02 (2006.01) H01S 3/042 (2006.01)

Patent

CA 2332864

A method and apparatus pump a laser gain medium of a laser rod having a first longidunal axis. At least one pump light source (42) emits pump light to the laser rod (12), and the pump light source has a second longitudinal axis (46) which is perpendicular to the first longitudinal axis (14). Radiation from various laser diode arrays is collimated and uniquely arranged in a vertical orientation in relation to the laser gain medium. Reflectors (38) focus the collimated radiation from the diode arrays onto the laser gain medium to achieve fundamental mode operation or Transverse Electromagnetic mode (TEM00 mode) operation. Both laser gain medium and reflectors may be simultaneously cooled with appropriate fluids in the apparatus. The assembly of the apparatus may be extended to hold a plurality of vertically oriented laser diode arrays to increase the laser pump power.

L'invention concerne un procédé et un dispositif qui permettent de pomper le milieu de gain laser d'un barreau laser comportant un premier axe longitudinal. Au moins une source (42) de lumière de pompage transmet une lumière de pompage au barreau laser (12). La source comporte un second axe longitudinal (46) perpendiculaire au premier axe longitudinal (14). Le rayonnement provenant des différents réseaux de diodes laser est collimaté et orienté uniquement verticalement par rapport au milieu de gain. Des réflecteurs (38) focalisent le rayonnement collimaté émis par le réseau de diodes sur le milieu de gain, de façon à assurer un fonctionnement en mode fondamental ou en mode transverse électromagnétique (TEM00). Le milieu de gain et les réflecteurs peuvent être refroidis simultanément par les fluides appropriés à l'intérieur du dispositif. On peut allonger le dispositif de façon à y placer une pluralité de réseaux de diodes laser orientés verticalement, ce qui permet d'accroître la puissance de la pompe laser.

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