| Wavelength |
1.535 micron |
Cr2O3 concentration
by weight |
0.05- 1% depending on diameter & repetition rate |
Yb2O3 concentration
by weight |
20.0- 30% depending on diameter |
Er2O3 concentration
by weight |
0.04- 0.4% depending on rods length |
Flatness
of plane surface |
Lambda/10 at l=0.63 micron |
| Parallelism |
20 arc seconds |
| Perpendicularity |
5 arc minutes |
| Scratch - dig |
20 - 10 (10 - 5 upon request) |
Homogeneity
of refractive index |
± 1 x 10-5 |
Reflectivity
of AR coatings |
Less than 0.25%
at 1.535 micron |
Damage threshold
of AR coatings |
1 GW/cm2 |
