Laser-diode pumped solid state laser apparatus, optical scanning apparatus, image forming apparatus and display apparatus

摘要

A laser-diode pumped solid-state laser apparatus (100) comprises at least one laser diode LD producing a pumping laser light, and at least one laser light generator including a monocrystalline substance (10) doped with a dopant element and pumped with the pumping laser light from at least one laser diode, the monocrystalline substance containing the dopant element with a concentration profile such that the dopant element increases a concentration thereof in a direction perpendicular to a laser oscillation direction gently in the form of a slope from a near zero concentration.