Generating Blue Laser Light

Device for generating blue laser light

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.

What is claimed is:

1. 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.

2. A device as claimed in claim 1, characterized in that the pumping laser used emits light having a wavelength of 650 to 665 nm.

3. A device as claimed in claim 1, characterized in that the resonator cavity comprises a glass fibre having a core of a glass composition consisting of heavy-metal fluorides and a cladding with a lower refractive index than the core.

More Details

Copyright © 2017 BeamQ Lasers.