Coherent light generators – Optical fiber laser
Patent
1991-03-08
1991-11-19
Davie, James W.
Coherent light generators
Optical fiber laser
372 40, 372 75, H01S 317
Patent
active
050671340
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.
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Dinh C. Nguyen et al., "Blue-Green (450-NM) Upconversion TM3+:YLF Laser", Applied Optics, Sept. 1989, vol. 28, No. 17.
Botjer William L.
Davie James W.
U.S. Philips Corp.
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