HIGH-ENERGY PULSED LIQUID LASER.
Annual technical summary rept. 1 Jan-31 Dec 69,
GENERAL TELEPHONE AND ELECTRONICS LABS INC BAYSIDE N Y BAYSIDE RESEARCH CENTER
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The report covers the development of circulatory liquid lasers based on Nd3 in aprotic solvents. The static laser properties of three systems, SeOCl2SnCl4, POCL3SnCl4 and POCL3ZrCl4, are presented in detail. It is shown from the point of view of gain, efficiency and loss, that the first and third systems are equivalent, while the second exhibits some degree of solubility instability. Chemically, the POCL3ZrCl4 represents a significant improvement in that it has a much decreased toxicity and is much less chemically reactive. Finally, it is shown that the losses, while high, are not excessive for pulsed systems. Investigation of the nonlinear properties of these liquid laser materials shows that they are capable of sustaining such effects, but they are not self-focusing liquids. The nonlinear properties observed occur at high thresholds and should present no performance limitations for non-Q-switched operation. The design and operating characteristics of all the components for a circulatory laser system are described in detail, including the pump, the cell, the heat exchanger and associated tubing. In addition, the characteristics of the flash tubes, the laser head, the power supply and the energy storage unit to be used in the repetitively pulsed laser application are described. Author
- Lasers and Masers