Diode-pumped 2 μm vibronic (Tm3+, Yb3+):KLu(WO4)2 laser.
Identifieur interne : 000577 ( Ncbi/Checkpoint ); précédent : 000576; suivant : 000578Diode-pumped 2 μm vibronic (Tm3+, Yb3+):KLu(WO4)2 laser.
Auteurs : Martha Segura [Espagne] ; Xavier Mateos ; Maria Cinta Pujol ; Joan Josep Carvajal ; Magdalena Aguil ; Francesc Díaz ; Uwe Griebner ; Valentin PetrovSource :
- Applied optics [ 1539-4522 ] ; 2012.
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English descriptors
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- MESH :
Abstract
We report on laser operation in a (6 at. % Tm, 5 at. % Yb):KLu(WO4)2 codoped crystal. The vibrational frequencies of KLu(WO4)2 are coupled to the electronic transitions of Tm3+ at 1946 nm, creating virtual final laser levels at higher energy than the ground level 3H6 of Tm3+. The longest recorded laser wavelength was 2039 nm, which is longer than permitted by a pure electronic transition in Tm3+ ions in KLu(WO4)2. We show that every laser wavelength can be explained with the electron-phonon coupling effect, where the vibration frequencies were determined through Raman spectroscopy.
PubMed: 22614492
Affiliations:
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<front><div type="abstract" xml:lang="en">We report on laser operation in a (6 at. % Tm, 5 at. % Yb):KLu(WO4)2 codoped crystal. The vibrational frequencies of KLu(WO4)2 are coupled to the electronic transitions of Tm3+ at 1946 nm, creating virtual final laser levels at higher energy than the ground level 3H6 of Tm3+. The longest recorded laser wavelength was 2039 nm, which is longer than permitted by a pure electronic transition in Tm3+ ions in KLu(WO4)2. We show that every laser wavelength can be explained with the electron-phonon coupling effect, where the vibration frequencies were determined through Raman spectroscopy.</div>
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