Accession Number:

AD0747401

Title:

Active Filtering for Optical Pumps.

Descriptive Note:

Final rept. 1 Nov 71-30 Apr 72,

Corporate Author:

GENERAL ELECTRIC CORPORATE RESEARCH AND DEVELOPMENT SCHENECTADY N Y

Personal Author(s):

• Morey,William W.

Report Date:

1972-08-01

Pagination or Media Count:

34.0

Abstract:

Eleven fluorescing organic dyes were tested for their ability to alter the spectrum of a flashlamp in such a way as to increase the light intensity in one or more of neodymium laser pump bands. The dyes were tested in a NdYAG laser system at flashlamp pulse energies from 3J to 15J. A few of the dyes gave a marked improvement in the output energy and slope efficiency of the pulsed NdYAG laser. Rhodamine 6G was identified as the best dye, giving better than 50 improvement in the laser output for 15J, 140 microsecond flashlamp pulses such as Bleaching of the Rhodamine 6G dye solution under flashlamp illumination requires the volume of the circulating dye to be approximately 2 liters for a half life of 1 million-5 joule pulses. Author

Descriptors:

• (*OPTICAL PUMPING
• *DYES)
• (*NEODYMIUM
• OPTICAL PUMPING)
• FLUORESCENCE
• ULTRAVIOLET SPECTRA
• VISIBLE SPECTRA
• INTENSITY
• ADDITIVES
• GAIN
• SAMARIUM

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE