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Fluorescence imaging of lattice re-distribution on step-index direct laser written Nd:YAG waveguide lasers.
- Source :
-
Journal of Applied Physics . 1/14/2015, Vol. 117 Issue 2, p023112-1-023112-5. 5p. 1 Color Photograph, 1 Diagram, 2 Graphs. - Publication Year :
- 2015
-
Abstract
- The laser performance and crystalline micro-structural properties of near-infrared step-index channel waveguides fabricated inside Neodymium doped YAG laser ceramics by means of three-dimensional sub-picosecond pulse laser direct writing are reported. Fluorescence micro-mapping of the waveguide cross-sections reveals that an essential crystal lattice re-distribution has been induced after short pulse irradiation. Such lattice re-distribution is evidenced at the waveguide core corresponding to the laser written refractive index increased volume. The waveguides core surroundings also present diverse changes including slight lattice disorder and bi-axial strain fields. The step-index waveguide laser performance is compared with previous laser fabricated waveguides with a stress-optic guiding mechanism in absence of laser induced lattice re-distribution. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 117
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 100464029
- Full Text :
- https://doi.org/10.1063/1.4905318