Laser thermal management systems and methods

H - Electricity – 01 – S

Patent

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H01S 3/042 (2006.01)

Patent

CA 2673599

A laser system thermal management system includes a laser gain assembly and a thermal management assembly. The laser gain assembly includes a laser gain medium and may include laser pump diodes. The thermal management system includes a high pressure gas tank connected to an open-cycle Joule-Thompson refrigerator. Cooled and partially liquefied gas is introduced into a reservoir. The reservoir may be in good direct thermal contact with the laser gain assembly or via a closed loop recirculating fluid heat exchanger. The heat generated by the laser gain assembly is removed by heat exchange with the cooled gas and condensate in the reservoir either by direct thermal contact or via the recirculating heat exchanger loop. Gas evaporating in the reservoir is vented.

L'invention concerne un système de gestion thermique à système laser comprenant un ensemble de gain de laser et un ensemble de gestion thermique. L'ensemble de gain de laser comprend un milieu de gain de laser et peut comprendre des diodes de pompe laser. Le système de gestion thermique comprend un réservoir de gaz haute pression relié à un réfrigérateur Joule-Thompson à cycle ouvert. Un gaz refroidi et partiellement liquéfié est introduit dans un réservoir. Le réservoir peut être en bon contact thermique direct avec l'ensemble de gain de laser ou via un échangeur de chaleur à recirculation de fluide en boucle fermée. La chaleur générée par l'ensemble de gain de laser est retirée par l'échange de chaleur avec le gaz refroidi et se condense dans le réservoir soit par contact thermique direct soit via la boucle d'échangeur de chaleur à recirculation. Le gaz s'évaporant dans le réservoir est évacué.

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