Microlasers comprising saturable absorber and having high active ions concentrations and its fabrication processes

摘要

A novel laser active material consists of a crystalline YAG or YLiF4 material which is doped with 2-15 (preferably 5-15)% Nd<3+> ions and which can be produced by liquid phase epitaxy. Also claimed are (i) a micro-laser cavity comprising inlet and outlet mirrors (2, 4) and the above laser active material (6); and (ii) a micro-laser having the above micro-laser cavity and a cavity pumping system. Further claimed are (i) a method of forming a laser active material by liquid phase epitaxial growth of a crystalline YAG or YLiF4 material, into which 2-15 (preferably 5-15)% Nd<3+> ions are introduced to confer laser properties; and (ii) a process for producing a component for a micro-cavity laser, involving carrying out the above method and forming a thin film of a saturable absorbent directly on the laser active material preferably by liquid phase epitaxy.