Title :
Fluorescence and laser operation in single-mode Ti-diffused Nd:MgO:LiNbO3 waveguide structures
Author :
Brinkmann, R. ; Sohler, W. ; Suche, H. ; Wersig, C.
Author_Institution :
Paderborn Univ., Germany
fDate :
2/1/1992 12:00:00 AM
Abstract :
The spectral properties of the guided-wave Nd fluorescence and results of laser oscillation in Ti-indiffused single-mode Nd:MgO:LiNbO 3 waveguides and waveguide cavities, respectively, are reported. The splitting and polarization behavior of the fluorescence lines around 0.9, 1.08, and 1.37 μm were studied. Using a single-mode diode laser as a pump source (λp=814.6 nm), an oscillation threshold in an 8-mm-long structure of 2.1-mW absorbed pump power has been obtained. An output power up to 310 μW (limited by the available pump power), a slope efficiency of 16% at power levels >150 μW, and an emission linewidth of 0.21 nm (at λs=1085 nm) have been measured
Keywords :
infrared spectra of inorganic solids; integrated optics; laser modes; lithium compounds; luminescence of inorganic solids; magnesium compounds; neodymium; optical pumping; optical waveguides; photoluminescence; solid lasers; spectral line breadth; 0.9 micron; 1.08 micron; 1.37 micron; 1085 nm; 16 percent; 2.1 mW; 310 muW; 8 mm; 814.6 nm; IR; LiNbO3:MgO, Nd, Ti; Ti-indiffused; absorbed pump power; diode laser; emission linewidth; fluorescence lines; guided-wave Nd fluorescence; ion diffusion; laser cavity resonators; laser operation; laser oscillation; light polarisation; oscillation threshold; output power; polarization behavior; power levels; pump source; single-mode; slope efficiency; spectral line splitting; spectral properties; waveguide cavities; waveguide structures; Ferroelectric materials; Fluorescence; Laser excitation; Laser modes; Neodymium; Optical device fabrication; Optical resonators; Optical waveguides; Pump lasers; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
