Patent ID: 8730456
Filing Date: 2014-05-20
Classification: G01S

Abstract:
1. A monostatic laser system, comprising: a photodetector fiber coupled to receive a received light; a light source fiber coupled to transmit a transmitted light; a diplexer fiber coupled to the photodetector to separate the received light, fiber coupled to the light source to separate the transmitted light, and a double-cladding fiber coupled on an output side of the diplexer, wherein said double-cladding fiber comprises an outer cladding, an inner cladding having a numerical aperture range of about 0.4 to 0.7, and a core having a numerical aperture range of 0.08 to 0.16; and a transmit and receive lens having one side facing a flat end of said fiber coupled on said output side of the diplexer, wherein the transmitted light emerges from the flat end towards the one side of said transmit and receive lens, and is collimated by said transmit and receive lens, wherein a focal length of said lens is chosen to yield a desired collimated beam diameter and divergence angle.