Laser Pump Lamp
Abstract
A program was conducted to continue development of a potassium- rubidium arc lamp for laser pumping. The average useful lifetime of such lamps was significantly increased, primarily as the result of improved lamp end seal technology. Life-times of nickel and Kovar endcap lamps built at the end of the program were typically in the 600-1000 hour range. The primary lamp failure mode was basal plane cleavage cracking of the sapphire envelopes. Difficulty in obtaining good CVD niobium-to-sapphire seal assemblies from outside suppliers hampered development work on the alternative protected end seal lamp design. One lamp was life tested, failing at 182 hours. Experiments on laser pumping efficiency were conducted. Efficiency was found to be roughly proportional to the potassium:rubidium ratio in the lamp fill. Four millimeter bore lamps were found to be more efficient than standard five millimeter bore lamps.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1977
- Accession Number
- ADB017604
Entities
People
- Norman C. Anderson