FLUORESCENCE AND OPTICAL MASER EFFECTS IN CaF$sub 2$: Sm$sup +$$sup +$

Journal Article · Tue Aug 01 00:00:00 EDT 1961 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.123.766· OSTI ID:4000909

Kaiser, W; Garrett, C G.B.; Wood, D L

Measurements are reported of absorption, emission, and activation spectra in CaF/sub 2/: Sm/sup 2+/, and also of fluorescence lifetime. A revised level scheme is proposed. Observations of optical maser effects were made at liquid hydrogen and liquid helium temperatures over a wide range of Pumping intensities. For illumination in the 6400-A band, the threshold intensity of illumination was about 20 w cm/sup -2/. Observations are reported of the dependence of the intensity of the maser beam on the pumping intensity. Photographic observations, made both with or without a Fabry-Perot etalon, show that on one particular sample five distinct frequencies were present in the maser signal, and that the number of modes excited was of the order of 1000. (auth)

• Research Organization: Bell Telephone Labs., Inc., Murray Hill, N.J.
• NSA Number: NSA-15-026772
• OSTI ID: 4000909
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 123; Other Information: Orig. Receipt Date: 31-DEC-61
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS
ABSORPTION
BEAMS
CALCIUM FLUORIDES
EMISSION
ENERGY LEVELS
EXCITATION
FLUORESCENCE
FREQUENCY
IONS
LIGHT
LOW TEMPERATURE
MASERS
MEASURED VALUES
OPTICAL SYSTEMS
PHOTOGRAPHY
SAMARIUM
SIGNALS
SPECTRA