We fabricated buried circular cladding waveguides with different cross-sectional diameters in neodymium-doped yttrium aluminate crystals via femtosecond laser direct writing at a repetition rate of 500 kHz. Continuous-wave waveguide lasers operating at 1079 nm were successfully achieved at room temperature using an optical pump with 803-nm light. In addition, the guiding properties of the cladding waveguides fabricated using various laser-writing conditions were investigated. The fabricated waveguides exhibited excellent performance, with an insertion loss of 1.2 dB at a wavelength of |
ACCESS THE FULL ARTICLE
No SPIE Account? Create one
Waveguides
Cladding
Crystals
Laser soldering
Raman spectroscopy
Waveguide lasers
Beam diameter