Optical Amplification at 1525 nm in BaYF₅: 20% Yb³⁺, 2% Er³⁺ Nanocrystals Doped SU-8 Polymer Waveguide

Figure 2

(a) A TEM image of nanocrystals, the average crystals size is about 13 nm. (b) The corresponding histogram of size distribution.

(a)

(b)