公开(公告)号：US10222627B2

公开(公告)日：2019-03-05

申请号：US15464382

申请日：2017-03-21

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Leonid A. Beresnev ,  Anthony R. Valenzuela ,  Chatt C. Williamson

IPC: G02B27/30 ,  G02B3/00 ,  G02B7/00 ,  G02B9/00 ,  G02B11/00 ,  G02B13/00 ,  G02B15/00 ,  G02B17/00 ,  G02B25/00 ,  G02B27/09 ,  G02B6/26 ,  F41H13/00

Abstract: An optics system includes at least one emitting fiber tip that transmits a divergent beam. The divergent beam includes a global maximum intensify of radiation centered with an output optical axis. The divergent beam includes central beams for collimating and periphery beams for disposing. The periphery beams include parasitic radiation of the divergent beam. The optics system includes at least one collimating lens having an output size, output shape, and output optical axis centered thereto and configured to redirect the central beams to a target and redirect the periphery beams into free-space; and at least one redirecting element positioned in between the at least one emitting fiber tip and the at least one collimating lens. The redirecting element includes a first area having an interior size and interior shape to transmit the central beams, and at least one second area outside of the first area to transmit the periphery beams.

公开(公告)号：US20190219779A1

公开(公告)日：2019-07-18

申请号：US15873143

申请日：2018-01-17

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Leonid A. Beresnev ,  Anthony R. Valenzuela ,  Chatt C. Williamson

IPC: G02B6/42 ,  H01S3/00 ,  G02B6/26 ,  G02B7/02 ,  G02B6/32 ,  G02B27/40

CPC classification number: G02B6/4225 ,  G02B6/262 ,  G02B6/32 ,  G02B6/4227 ,  G02B6/4296 ,  G02B7/02 ,  G02B27/40 ,  H01S3/005 ,  H01S3/06708 ,  H01S3/11 ,  H05H1/46

Abstract: A technique for delivery of a divergent laser beam emitted with a free-space laser fiber facet, the beam having an optical power, into an optical waveguide. An optical axis of the laser beam is aligned approximately along a propagation Z direction into the optical waveguide. The fiber facet is located in a first plane perpendicular to the Z direction. The waveguide includes an input, direction, and X-Y position of the input in a second plane. The waveguide includes fluctuations in a X-Y-Z position of the input and fluctuations in direction. The laser beam is transformed into a collimated beam by re-directing a propagation of the laser beam, shifting the laser beam parallel to the Z direction, and focusing the laser beam into the input. The speed of transformation of the laser beam is greater than an instant speed of the fluctuations. A maximum optical power is delivered into the waveguide.

公开(公告)号：US20180275418A1

公开(公告)日：2018-09-27

申请号：US15464382

申请日：2017-03-21

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Leonid A. Beresnev ,  Anthony R. Valenzuela ,  Chatt C. Williamson

IPC: G02B27/30 ,  G02B27/09 ,  G02B6/26 ,  F41H13/00

CPC classification number: G02B27/30 ,  F41H13/0062 ,  G02B6/262 ,  G02B6/32 ,  G02B27/0927 ,  G02B27/0961 ,  G02B27/0977

Abstract: An optics system includes at least one emitting fiber tip that transmits a divergent beam. The divergent beam includes a global maximum intensify of radiation centered with an output optical axis. The divergent beam includes central beams for collimating and periphery beams for disposing. The periphery beams include parasitic radiation of the divergent beam. The optics system includes at least one collimating lens having an output size, output shape, and output optical axis centered thereto and configured to redirect the central beams to a target and redirect the periphery beams into free-space; and at least one redirecting element positioned in between the at least one emitting fiber tip and the at least one collimating lens. The redirecting element includes a first area having an interior size and interior shape to transmit the central beams, and at least one second area outside of the first area to transmit the periphery beams.