Light-synthesizing laser device

Patent metadata

Field	Value
Publication number	US-9746615-B2
Application number	US-201415310655-A
Country	US
Kind code	B2
Filing date	Jun 17, 2014
Priority date	Jun 17, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

The light-synthesizing laser device includes a plurality of collimating lenses that are arranged in a one-to-one relationship with a plurality of laser light sources which exhibit anisotropy in a laser light emission angle, and that convert laser light beams emitted from the laser light sources into parallel light; a condensing lens that condenses the laser light that has been converted into parallel light by the plurality of collimating lenses; and an optical fiber ( 5 ) having a square waveguide core (SC) which has a square shape, the fiber receiving and synthesizing the laser light condensed by the condensing lens. A longitudinal axis of a condensed beam condensed by the condensing lens is aligned with a diagonal axis of the square waveguide core.

First claim

What is claimed is:

1. A light synthesis laser apparatus, comprising:
a first plurality of first laser light sources having anisotropy relative to a first laser radiation angle and having a first light emitting area having a first width direction and each irradiating a first laser light;
a second plurality of second laser light sources each irradiating a second laser light and each having anisotropy relative to a second radiation angle of said second laser light and a second light emitting area having a second width direction of which the second width direction is orthogonal to the first width direction of the first light emitting area of said plurality of the first laser light sources;
a plurality of first collimating lenses installed in a one to one alignment relative to said first plurality of the first laser light sources and a plurality of second collimating lenses that are installed in a one to one alignment relative to said second plurality of the second laser light sources, and said pluralities of said first and said second collimating lenses converts each respective laser light irradiated from said first plurality of laser light sources and said second plurality of said laser light sources into parallel light;
a first converging lens that converges the first laser lights converted to said parallel light by the plurality of first collimating lens corresponding to said plurality of the first laser-light sources among said plurality of the first collimating lenses to provide a first convergent beam and a second converging lens that converges the second laser lights converted to said parallel light by the second collimating lenses corresponding to said plurality of the second laser light sources among said plurality of the second collimating lenses to provide a second convergent beam; and
an optical fiber including a square waveguide core and having an square shape receives as a first incident laser light and a second incident second laser light each respectively converged by said first and said second converging lenses and synthesizes a synthetic laser light;
wherein a first long axis of said first convergent light beam converged by said first converging lens coincides with a diagonal axis of said square waveguide core of said optical fiber and a second long axis of second convergent light beam converged by said second converging lens coincides with another diagonal axis of said square waveguide core of said optical fiber.

Assignees

• Shimadzu Corp

Inventors

• Saikawa Jiro
• Ishigaki Naoya
• Uno Shingo
• Hiroki Tomoyuki
• Fukushi Ichiro
• Kadoya Akiyuki
• Sakamoto Junki
• Tojo Koji
• Watanabe Kazuma

Classifications

• G02B6/43

  Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections · CPC title

• G02B6/32 Primary

  having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)} · CPC title

• G02B6/42

  Coupling light guides with opto-electronic elements · CPC title

• G02B6/02338

  Structured core, e.g. core contains more than one material, non-constant refractive index distribution in core, asymmetric or non-circular elements in core unit, multiple cores, insertions between core and clad · CPC title

• G02B27/123 Primary

  The splitting element being a lens or a system of lenses, including arrays and surfaces with refractive power · CPC title