Patent ID: 8085821

Claim:
The light-enhancing method of the invention comprising the following steps: providing an optical system that produces a mode-reorganized optical beam and comprises an output end from which the mode-reorganized optical beam is sent from the system; a wide-aperture lasing medium that radiates an optical beam having multiple modes, has at least one cladding and a core, said core having a thickness, and a DPH mode reorganizer with a plurality of nanofeatures in the form of holographic elements having less depth than the thickness of the core and smaller dimensions than the half-wavelength of light emitted by the lasing medium, the nanofeatures being arranged in a pattern that accomplishes a given function and locally changes the refractive index of the core; and a mirror selected from a fully reflecting mirror and a partially reflecting mirror; said multiple modes comprising essentially at least one low-order mode and a plurality of high-order modes; forming a resonator from the lasing medium, the DPH reorganizer, and the mirror selected from a fully reflecting mirror and a partially reflecting mirror; and bouncing the light emitted from the lasing medium back and forth in the resonator and reorganizing the modes by using the given function for gaining said at least one low-order mode by suppressing the high-order modes, thus increasing brightness of the light emitted from the system.