Optical Pumps for Lasers.
Final rept. 17 May 71-16 Jul 72,
ILC TECHNOLOGY INC SUNNYVALE CALIF
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The objective of this program was to increase the efficiency and reproducibility of optical pumps for NdYAG lasers both when new and after 1 million or 10 million pulses. Efficiency was increased by using smaller bore diameters to 2.5 mm, higher pressures, krypton gas at 10 J, pulse lengths near 100 microsec, cerium-doped quartz envelopes, and a simmer current. Operation with a simmer current increased useful light output by 25 and reduced pulse-to-pulse varibaility from 0.43 to 0.12. Lamp life, reproducibility, and efficiency were studied as functions of precision control of bore diameter, the use of a simmer discharge, the use of cerium-doped quartz envelopes, the employment of fluorescent dye solutions, color center formation, and cooling techniques. Modified author abstract
- Lasers and Masers