Accession Number:

ADB017604

Title:

Laser Pump Lamp

Descriptive Note:

Final technical rept. Dec 1974-Oct 1975

Corporate Author:

ILC TECHNOLOGY INC SUNNYVALE CA

Personal Author(s):

Report Date:

1977-02-01

Pagination or Media Count:

63.0

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 potassiumrubidium ratio in the lamp fill. Four millimeter bore lamps were found to be more efficient than standard five millimeter bore lamps.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE