Abstract
A technique of direct writing of depressed cladding waveguides by a femtosecond laser beam in doped YAG laser crystals has been developed. A low threshold buried waveguide laser in the YAG:Nd3+ crystal has been demonstrated. Spectroscopic investigation of the crystal modified by a femtosecond laser beam and phase delay measurements of refractive index change in series of YAG crystals lead to conclusion that the refractive index change is due modifications in a defect system of a doped YAG crystal, while crystal lattice persists during this process.
| Original language | English |
|---|---|
| Pages (from-to) | 836-841 |
| Number of pages | 6 |
| Journal | Trends in Optics and Photonics |
| Volume | 98 |
| DOIs | |
| Publication status | Published - 9 Feb 2005 |