KOHERAS A/S Patent applications |
Patent application number | Title | Published |
20100172018 | DEEP BLUE EXTENDED SUPER CONTINUUM LIGHT SOURCE - A new deep blue extended super continuum light source is provided wherein said super continuum at least extends to a low wavelength border λ | 07-08-2010 |
20100040335 | LIFETIME EXTENDING AND PERFORMANCE IMPROVEMENTS OF MICRO-STRUCTURED FIBRES VIA HIGH TEMPERATURE LOADING - The invention relates to an optical fibre comprising a core and a cladding comprising a core material and a cladding material, respectively, wherein said fibre is a non-linear microstructured optical fibre, said microstructured optical fibre being obtainable by a method comprising loading said core material and optionally said cladding material with hydrogen and/or deuterium whereby the lifetime of the fibre may be extended in high pulse applications. | 02-18-2010 |
20090262764 | Blue Extended Super Continuum Light Source - A new blue extended super continuum light source is claimed. When pulses of partly coherent monochromatic “pump” radiation of essentially constant amplitude is propagating through a microstructure fibre medium within a region of anomalous dispersion of the medium, then, provided the medium has a finite nonlinear coefficient of the index of refraction, the pump pulse is subject to a modulation instability. This instability results in the generation and exponential growth of sidebands, the two closest to the “pump” frequency being the dominant ones. The modulation frequency is proportional to the square root of the power in the carrier wave. In the time domain this leads to that the interaction between the medium and the radiation results in contraction of the width of the amplitude peaks, which results in formation of a train of narrow pulses with Tera Hertz repetition rate. | 10-22-2009 |
20090238215 | Method Of Inducing Refractive Index Structures In A Micro-Structured Fiber, A Micro-Structured Fiber And An Article - Refractive index modifications such as e.g. Fiber Bragg gratings in micro-structured Fiber are according to an aspect of the invention fabricated by first filling and/or purging the holes of the micro-structured fiber with inert gas or by evacuation and, optionally subsequently scaling the ends. Alternatively, the ends of the micro-structured fiber may be sealed without a preceding purging or evacuation of the holes. In this way hydrogen or deuterium present in the holes after photosensitizing loading will not react with atmospheric oxygen to form water. Water formed this way would otherwise seriously impair the grating formation process. Bragg gratings and other refractive index structures can thus be fabricated with high quality and predictable specifications in micro-structured fiber. Sealing the fiber ends also prevents in-diffusion of moisture. The invention may e.g. find application in connection with fiber optical sensors, high-power fiber lasers, etc. | 09-24-2009 |
20090074023 | Broad Spectrum Light Source - The light includes a laser ( | 03-19-2009 |
20080226242 | Method of Generating Supercontinuum Optical Radiation, Supercontinuum Optical Radiation Source, and Use Thereof - A method of generating supercontinuum optical radiation, the method comprising: (a) providing an optical wave-guide ( | 09-18-2008 |