Physics & Astronomy
phosphates
78%
copper
55%
glass
45%
ions
36%
laser materials
30%
photovoltaic cells
30%
energy conversion
28%
visible spectrum
28%
solid state lasers
27%
lasing
23%
emission spectra
22%
energy levels
21%
pumps
18%
life (durability)
17%
decay
14%
photons
14%
electronics
13%
excitation
12%
energy
7%
Engineering & Materials Science
Phosphates
89%
Ions
71%
Copper
63%
Glass
61%
Excited states
43%
Solid state lasers
40%
Photovoltaic cells
31%
Photons
30%
Electron energy levels
30%
Energy conversion
26%
Pumps
20%
Chemical Compounds
Phosphate Glass
100%
Excited Electronic State
31%
Ion
30%
Pump
25%
Photon
24%
Energy
24%
Substance Spectroscopy
24%
Emission Spectrum
23%
Donor
17%