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Polarized spectral properties of Sm:YAlO3 single crystal for reddish-orange laser.
- Source :
-
Optical Materials . Jan2020, Vol. 99, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- Sm:YAlO 3 (Sm:YAP) crystal with size of Φ28 × 80 mm3 was grown by Czochralski (Cz) method. Polarized absorption spectra and fluorescence spectra of Sm:YAP crystal were discussed for the first time. The peak emission cross-sections were calculated to be 0.80 × 10−21 cm2 (604 nm for a-polarization), 1.82 × 10−21 cm2 (604 nm for b-polarization) and 1.63 × 10−21 cm2 (610 nm for c-polarization), respectively. The Judd-Ofelt (JO) intensity parameters were calculated to be Ω 2 = 2.59 × 10−20 cm2, Ω 4 = 1.78 × 10−20 cm2 and Ω 6 = 2.98 × 10−20 cm2, respectively. The decay lifetime of 4G 5/2 energy level was measured to be 2.51 ms. All above results indicate the Sm:YAP crystal may be a potential candidate of reddish-orange laser pumped directly by the GaN/InGaN laser diode. • Sm:YAlO 3 crystal was grown by Cz method. • Polarized optical spectra of Sm:YAlO 3 crystal were investigated. • The transitions of 4G 5/2 → 6H 7/2 have the highest branching ratio value, which is suitable for reddish-orange laser. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09253467
- Volume :
- 99
- Database :
- Academic Search Index
- Journal :
- Optical Materials
- Publication Type :
- Academic Journal
- Accession number :
- 141639521
- Full Text :
- https://doi.org/10.1016/j.optmat.2019.109510