Passive apparatus for stabilizing a flashlamp-pumped dye laser

In a flash lamp pumped, dye laser apparatus comprising a flash lamp and a liquid dye solution in a transparent compartment proximate to the flash lamp, said compartment also connected to a tubular circulatory system for moving said liquid dye, said dye solution activated by flashing of said lamp for lasing to emit light, said lamp and compartment enclosed in a cooling first water jacket, said jacket enclosing deionized water for cooling, an improved cooling system wherein the temperature of said deionized water and said liquid dye solution are maintained within 0.5.degree. C. of one another, enabling said laser for pulsing at a stabilized 10 pulses per second rate, said cooling system further comprising:

• first heat exchange reservoir (12) for receiving a bath of laser dye liquid 10 from said tubular circulatory system (24, 26) connected thereto, and a first pump means (14) for pumping said dye liquid from said first reservoir and through said compartment 18 and back to said reservoir in a closed system through said tubular system;
• first pipe means 28 submerged in said first reservoir for heat exchange purposes, carrying deionized water in a closed loop (42, 50, 34, 38, 41) including said first jacket, and further including a second reservoir (32) having a second pipe means, opened for pouring deionized water thereinto (30) through a water filter means 44 submerged in said second reservoir and siphoning deionized water therefrom, said deionized water pumped through said closed loop by a second pumping means 36 said second closed loop passing through a second water jacket means 40 for cooling said deionized water closed loop enclosed in said second jacket, said jacket having tap water circulating therethrough.