Long-wavelength stimulated emission via cascade laser action in Ho : YLF

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.91083· OSTI ID:6035495

Esterowitz, L; Eckardt, R C; Allen, R E

Two cascade laser schemes are demonstrated for Ho/sup 3 +/ in LiYF/sub 4/. The first involves the /sup 5/S/sub 2/, /sup 5/I/sub 5/, and /sup 5/I/sub 7/ manifolds with laser oscillation at 1.392 and 1.673 ..mu..m, and the second involves the /sup 5/S/sub 2/, /sup 5/I/sub 5/, and /sup 5/I/sub 6/ manifolds with laser oscillations at 1.392 and 3.914 ..mu..m. The 3.9-..mu..m transition is the longest-wavelength rare-earth laser achieved to date and further the system has attractive engineering practicality. The specificity of excitation inherent in the cascade approach is considered essential in overcoming the adverse multiphonon relaxation processes at long wavelengths.

• Research Organization: Naval Research Laboratory, Washington, D.C. 20375
• OSTI ID: 6035495
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 35:3; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HOLMIUM COMPOUNDS
LANTHANUM COMPOUNDS
LASERS
METALS
OSCILLATIONS
RARE EARTH COMPOUNDS
RARE EARTHS
SOLID STATE LASERS
STIMULATED EMISSION
TRANSITION ELEMENT COMPOUNDS
WAVELENGTHS
YTTRIUM COMPOUNDS