DocumentCode
1150961
Title
Direct upper-state pumping of the 2.8 μm, Er3+:YLF laser
Author
Stoneman, R.C. ; Lynn, J.G. ; Esterowitz, L.
Author_Institution
US Naval Res. Lab., Washington, DC, USA
Volume
28
Issue
4
fYear
1992
fDate
4/1/1992 12:00:00 AM
Firstpage
1041
Lastpage
1045
Abstract
Direct resonant pumping of the 4I 11/2 upper state of the 2.8-μm Er3+:YLF laser at 0.97 μm is shown to be more efficient than other pumping schemes which have been used for this transition. Upper-state pumping avoids nonradiative losses arising from phonon and self-quenching decays inherent in other pumping schemes. Efficient performance of the 2.8-μm laser is maintained on condition that extremely shallow pump absorption is avoided. Reduced efficiency for shallow pump absorption is attributed to upconversion loss arising from high pumping rates
Keywords
erbium; laser transitions; lithium compounds; optical pumping; solid lasers; yttrium compounds; 0.97 micron; 2.8 micron; Er3+:YLF laser; LiYF4:Er; YLF:Er3+; direct resonant pumping; direct upper state pumping; efficiency; nonradiative losses; phonon decay; pumping rates; pumping schemes; self-quenching decays; shallow pump absorption; upconversion loss; Absorption; Erbium; Helium; Laser excitation; Laser theory; Laser transitions; Laser tuning; Phonons; Pump lasers; Resonance;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/3.135226
Filename
135226
Link To Document