Crystal properties |
|
Chemical Formula |
Cr:Mg2SiO4 |
Concentration |
~3 – 6 x 1018 cm³ |
Melting Point |
1890 °C |
Density |
3.22 g/cm³ |
Hardness (Mohs) |
7 |
Thermal Expansion Coefficient |
9.5 x 10-6 |
Thermal Conductivity |
8 W /m /K (300 K) |
Stimulated Emission Cross Section |
1.44 x 10-19 cm-2 |
Relaxation Time of Terminal Lasing Level |
<10 ps |
Dadiative Lifetime |
25 ms |
Spontaneous Fluorescence |
2.7 ms |
Loss Coefficient |
0.02 cm-1 |
Refractive Index |
1.635 |
Spectroscopic and Laser Properties |
|
Major Pumping Bands |
850 – 1200 nm |
600 – 850 nm |
|
350 – 550 nm |
|
Fluorescence Band |
680 – 1400 nm |
Room-temperature Fluorescence Lifetinme |
~ 3 ms |
Lasing Wavelenght (center) |
1235 nm (pulsed) |
Spectral Bandwith |
30 nm (pulsed) |
Typical Slope Efficiency |
23 % (pulsed) |
Tuning Range |
1167 – 1345 nm |
Gain Cross Section |
~ 1.45 x 10-19 cm² |