Spectroscopy and laser properties of Nd sup 3+ -doped CaF sub 2 , SrF sub 2 and BaF sub 2
Conference
·
OSTI ID:7122397
The optical properties of Nd{sup 3+} in CaF{sub 2}, SrF{sub 2}, and BaF{sub 2} have been investigated in order to determine if these materials are useful as laser-pumped amplifier media. The CaF{sub 2}:Nd crystal was found to not be useful because the impurities tend to cluster at very low concentration, leading to the formation of nonluminescent centers. On the other hand, the Nd{sup 3+} centers in BaF{sub 2} exhibit unacceptably low transition strengths. SrF{sub 2}:Nd appears to have adequate absorption strength, and, in addition, to have a remarkably long emission lifetime of 1280 {mu}s. A maximum doping of 0.20 atomic % Nd{sup 3+} can be tolerated in SrF{sub 2} without the occurrence of detrimental clustering. The peak emission cross section of SrF{sub 2}:Nd is 1.7 {times} 10{sup {minus}20} cm{sup 2} at 1036.5 nm. Direct measurement of the gain spectrum of SrF{sub 2}:Nd{sup 3+} reveals the presence of the {sup 4}F{sub 3/2} {r arrow} {sup 2}G{sub 9/2} excited state absorption lines, although the impact on the emission cross section is minor. 19 refs., 7 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7122397
- Report Number(s):
- UCRL-102247; CONF-900373--2; ON: DE90012086
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM FLUORIDES
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CROSS SECTIONS
DOPED MATERIALS
EMISSION SPECTRA
ENERGY LEVELS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LASERS
LIFETIME
MATERIALS
NEODYMIUM COMPOUNDS
NEODYMIUM LASERS
OPTICAL PROPERTIES
OPTICAL PUMPING
PHYSICAL PROPERTIES
PUMPING
RARE EARTH COMPOUNDS
SOLID STATE LASERS
SPECTRA
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM FLUORIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM FLUORIDES
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CROSS SECTIONS
DOPED MATERIALS
EMISSION SPECTRA
ENERGY LEVELS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LASERS
LIFETIME
MATERIALS
NEODYMIUM COMPOUNDS
NEODYMIUM LASERS
OPTICAL PROPERTIES
OPTICAL PUMPING
PHYSICAL PROPERTIES
PUMPING
RARE EARTH COMPOUNDS
SOLID STATE LASERS
SPECTRA
SPECTROSCOPY
STRONTIUM COMPOUNDS
STRONTIUM FLUORIDES