Device for generating blue laser light
AssigneeU.S. Philips Corporation
InventorEmmanuel W. J. L. Oomen
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Abstract
A device and a method of generating blue laser light having a wavelength of approximately 450 nm by means of an upconversion process, said device comprising a single semiconductor laser which emits light having a wavelength of 640 to 700 nm, and a resonator cavity which comprises a glass composition of heavy metal fluorides, which glass composition contains trivalent thulium ions. The resonator cavity preferably consists of a glass fibre having a core of a glass composition which consists of heavy-metal fluorides containing 0.01 to 1 mol% of thulium fluoride and a cladding with a lower refractive index than the core. The device suitable for generating continuous blue laser light.
Claims7
A device for generating blue laser light having a wavelength of 445 to 455 nm by means of an upconversion process, said device including a pumping laser and a resonator cavity comprising a fluoride-containing material having trivalent thulium ions, characterized in that the fluoride-containing material is a glass composition of heavy-metal fluorides and in that a single semiconductor laser is used as the pumping laser which emits light having a wavelength of 640 to 700 nm.
A method of generating blue laser light by means of an upconversion process, in which a pumping laser and a resonator cavity are used, which resonator cavity comprises a fluoride-containing material having trivalent thulium ions, characterized in that a glass composition of heavy metal fluorides is selected as the fluoride containing material, and in that a single semiconductor laser is used to irradiate light having a wavelength of 640 to 700 nm, thereby obtaining laser light having a wavelength of 445 to 455 nm.
Dependencies are inferred from the claim text.