Title :
Nd:MgO:LiNbO3 channel waveguide laser devices
Author :
Lallier, Eric ; Pocholle, J.P. ; Papuchon, M. ; DeMicheli, M.P. ; Li, M.-J. ; He, Qing ; Ostrowsky, D.B. ; Grezes-Besset, C. ; Pelletier, E.
Author_Institution :
Thomson-CSF, Orsay, France
fDate :
3/1/1991 12:00:00 AM
Abstract :
A report is presented on the fabrication and efficient CW operation at 1.085 μm of Nd:MgO:LiNbO3 proton-exchanged channel waveguide lasers and amplifiers optically pumped at 0.814 μm. Thresholds as low as 1.5 mW and slope efficiencies up to 34% were achieved in monolithic miniature laser devices. Up to 14 mW of output power could be achieved without observation of photorefractive damage. Diode laser pumping was also demonstrated. For the amplifier a small-signal gain of 7.5 dB was achieved for 22 mW of coupled pump power. Experimental results were analyzed with the use of a mode overlap formalism and a value of 0.93 was found for the pump quantum efficiency. Absorption spectra, fluorescence spectra, and lifetime measurements are also reported for the bulk and waveguide material
Keywords :
integrated optics; ion exchange; laser modes; lithium compounds; magnesium compounds; neodymium; optical pumping; optical waveguides; solid lasers; 0.814 micron; 1.085 micron; 1.5 mW; 14 mW; 22 mW; 34 percent; 7.5 dB; CW operation; LiNbO3:MgO, Nd; absorption spectra; amplifiers; channel waveguide laser devices; coupled pump power; diode laser pumping; fluorescence spectra; lasing threshold; lifetime measurements; mode overlap formalism; monolithic miniature laser; optically pumped; output power; proton-exchanged; pump quantum efficiency; slope efficiencies; small-signal gain; Laser excitation; Operational amplifiers; Optical amplifiers; Optical device fabrication; Optical waveguides; Power amplifiers; Pump lasers; Semiconductor optical amplifiers; Stimulated emission; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
