Accession Number:

AD0767281

Title:

Generation, Selection and Amplification of Mode-Locked Ruby Laser Pulses,

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Report Date:

1973-08-29

Pagination or Media Count:

39.0

Abstract:

A system capable of producing laser pulses of 5-20 picosecond duration and with energies of up to 40 mJ is described. The system consists of a TEMoo-mode, mode-locked ruby laser, an external pulse selector, and two amplifiers. TEMoo-mode operation is obtained in the passively mode-locked oscillator by the use of a ruby rod only 2.5 mm in diameter so that the rod is the limiting aperture of the cavity. The total pulse trains have energies of about 3 mJ, while individual pulses have energies of 0.2 to 0.3 mJ and are 20 to 25 psec in duration. The pulse duration can be reduced to approximately 5 psec by incorporating a telescope in the cavity. The probability of obtaining a cleanly locked pulse train exceeds 0.8 and intracavity damage is minimized due to the smooth mode profile. Modified author abstract

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE