Patent ID: 8848759
Filing Date: 2014-09-30
Classification: H01S

Abstract:
1. An optical system comprising: a waveguide including a guiding core formed from erbium-doped yttrium aluminum garnet and a plurality of first cladding layers, wherein the guiding core has a width-to-thickness aspect ratio of at least about 2.4 to 1, wherein at least two of the first cladding layers are disposed adjacent opposite sides of the guiding core and wherein a doping percentage of the guiding core is less than one percent; and a pump source for generating an electromagnetic radiation having a wavelength in the range of 900 to 1000 nanometers, wherein the pump source directs the electromagnetic radiation into at least the guiding core to pump the guiding core into an upper state to produce an output waveform that is an eye-safe radiation.