TY - JOUR
AU - 
AB - Abstract. The influence of the phosphorus pentoxide ( P 2 O 5 ) content on the material properties of Er,Yb-doped potassium-lanthanum phosphate glass was studied. Glass samples of the following nominal composition 35.0 K 2 O - 6.8 Yb 2 O 3 - 8.0 La 2 O 3 - 0.2 Er 2 O 3 - 50.0 P 2 O 5 (in mol%) were prepared from starting materials mixed with five additional amounts of P 2 O 5 (0, 7.5, 15.0, 30.0, and 45.0 mol% related to the nominal glass composition). The P 2 O 5 addition influence on properties of prepared glasses was studied using Raman, absorption, and fluorescence spectroscopy. The glass residual IR absorption and Judd–Ofelt intensity parameters together with absorption and emission cross sections were estimated. The results showed the increasing polymerization of glass and the P ─ O bond shortening with P 2 O 5 content increase. The spectroscopy of Er 3 + and Yb 3 + ions was affected only marginally by the glass composition. It was found that fluorescence decay time corresponding to upper-laser-level I 4 13 / 2 increased with the decrease of P 2 O 5 content in the glasses, which was related to increasing OH − contamination of the glass. The laser action at 1.53 μ m under 975-nm pulsed laser diode pumping was successfully demonstrated. Low threshold and laser slope efficiency up to 21% in respect to absorbed pumping power were obtained.
TI - Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses
JF - Optical Engineering
DO - 10.1117/1.OE.55.4.047102
DA - 2016-04-01
UR - https://www.deepdyve.com/lp/spie/phosphate-content-influence-on-structural-spectroscopic-and-lasing-f0OhxZv1Z8
SP - 047102
EP - 047102
VL - 55
IS - 4
DP - DeepDyve
ER -