1. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The Raman spectra of Er,Yb:KLaP glass samples. The Raman frequency shift of the P─O phonon band at ∼ 1160 cm−1 is depicted in the inset. All spectra were normalized to the band at 700 cm−1. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

2. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The transmission spectra of Er,Yb:KLaP glass samples corrected to Fresnel losses. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

3. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The detailed absorption spectra of Er,Yb:KLaP glass samples: (a) the pumping band around 1 μm and (b) the lasing band around 1.5 μm. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

4. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The (a) absorption and (b) emission cross section corresponding to I15/24→I13/24 transition of Er3+ for Er,Yb:KLaP glass samples. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

5. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The fluorescence spectra of Er,Yb:KLaP glass samples: (a) the pumping band around 1 μm and (b) the lasing band around 1.5 μm. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

6. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The emission cross section corresponding to I15/24→I13/24 transition of Er3+ for Er,Yb:KLaP glass samples calculated using the Füchtbauer–Ladenburg formula. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

7. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. The fluorescence decay time of tested Er,Yb:KLaP glass samples. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

8. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. Relationship between nonradiative decay rate 1/τnr and the IR absorption at 3 μm in tested Er,Yb:KLaP glasses. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

9. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. Laser performance of Er,Yb:KLaP glass samples A to D: output energy as a function of the absorbed pumping pulse energy. Lres, resonator length; ROC, output coupler reflectivity; λp, pumping radiation wavelength, Δt, pumping pulse width; f, pulse repetition rate; Pth, threshold absorbed pumping power amplitude; σ, slope efficiency; λe, laser emission wavelength. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102

10. Date of download: 5/30/2016 Copyright © 2016 SPIE. All rights reserved. Laser performance of Er,Yb:KLaP glass samples A to D [(a) to (d)]: laser output beam profiles at maximum pumping power for corresponding samples. Images were recorded in distance 125 mm from output coupler. The real particular image size is 12.4×12.4 mm. Figure Legend: From: Phosphate content influence on structural, spectroscopic, and lasing properties of Er,Yb-doped potassium-lanthanum phosphate glasses Opt. Eng. 2016;55(4):047102. doi:10.1117/1.OE.55.4.047102