Apparatus and method for replenishing laser dye solution

Details Apparatus and method for replenishing laser dye solution Apparatus and method for replenishing laser dye solution

H - Electricity

01

S

H01S 3/213 (2006.01) H01S 3/02 (2006.01) H01S 3/06 (2006.01)

Patent

CA 2168237

In a dye laser system, a porous bed filter (40) is loaded with dye prior to operation of the system. With repeated firings, the dye solution is filtered by the porous bed filter (40) to remove by-products of the laser process. Solute concentration is monitored (52) and dye and additives removed by the filter (40) are replenished by a metering pump (42). Precise temperature control (56) assures consistent filtering of dye by the filter (40) for more consistent color and energy output. To control (48) the metering pump (42), the differential output of a two-channel absorption detector (68, 70) is digitized (76). The digitized signal is loaded into a counter (78) which drives the metering pump (42). The useful lifetime of the dye solution is enhanced by incorporating pH buffers in die solution.

Système de laser à colorant dans lequel on imprègne de colorant un filtre (40) à support poreux avant la mise en service du système. Au fil des tirs répétés, la solution de colorant est filtrée par le filtre (40) à support poreux en vue d'éliminer les sous-produits du processus laser. On contrôle (52) la concentration de soluté et on remplace à l'aide d'une pompe (42) de dosage le colorant et les additifs éliminés par le filtre (40). Une régulation (56) précise de la température assure un filtrage homogène du colorant par le filtre (40), et donc un rendement plus homogène en couleurs et en énergie. Dans le but de commander (48) la pompe (42) de dosage, on numérise (76) le signal de sortie différentiel d'un détecteur (68, 70) d'absorption à deux canaux, et on introduit le signal numérisé dans un compteur (88) commandant la pompe (42) de dosage. On peut prolonger la vie utile de la solution de colorant en incorporant des tampons de régulation du pH.

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